 Upgrading kit for BA.....
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Complete Newb
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I have noticed that newbonnevilleamerica can offer a boring-kit with gives 200cc more to the engine. Have anyone bought this? does it work? experiences please
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 Re: Upgrading kit for BA.....
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Joined: Sep 2007
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Learned Hand
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Learned Hand
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Probably the best money you could spend on the motor. I've had mine done for around 30,000 miles with no problems. Big difference in power! 
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: Upgrading kit for BA.....
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Joined: Jan 2005
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"Lighten up, Francis."
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"Lighten up, Francis."
Joined: Jan 2005
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Re: Upgrading kit for BA.....
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Joined: Jan 2005
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Adjunct
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Adjunct
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Hasse TBA -02 Pre-Fire Cardinal Red, Wiseco 904, Thunderbike pipes, Freak
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Re: Upgrading kit for BA.....
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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Quote:
what he said
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Upgrading kit for BA.....
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Joined: Jan 2005
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Learned Hand
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Learned Hand
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Geir, welcome to the asylum....... Another source for the 904 Big Bore is here: Click Here for D & D The difference is that you get a ready to go kit in exchange for your cylinder barrels. Otherwise you must have the machine work done on your cylinders.
Tony G
'03 America
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Re: Upgrading kit for BA.....
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Loquacious
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Loquacious
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Yep , did mine and .......  .....awsome !
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Re: Upgrading kit for BA.....
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Joined: Dec 2006
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Oil Expert
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Oil Expert
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I've been thinking about the future possibility of boring out my 865 speedie and was wondering how hard it was to take off the barrels as a means of sending them away to this mob. Of course I haven't done much research around where I live and I'd really love to do it myself anyway. So if the freight from Aus wasn't too drastic, can anyone fill me in on whatever else I would have to do besides send them the barrels. I also noticed there was no talk about increasing the size of the ports. Is this preferential or are there certain probs with doing it. Also, without talking to them, if increasing the port sizes was a good option, do they include valves etc. One final thing, can anyone in Aus tell me whether boring out a stock bike has any ramifications to Comprehensive insurance. I wouldn't imagine there is but just wanted to check.  I'm really just self taught being on here for 2 years as well has using the manuals so I do all my own servicing including the shims etc but this takes it to another level. I reckon the sense of satisfaction in doing this myself though would be just awesome. In fact I'm feeling a chubby coming on as we speak  So yeah, any feedback would be really appreciated. cheers guys staffo
Last edited by Staffo; 09/17/2009 9:06 PM.
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 Re: Upgrading kit for BA.....
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Joined: Jan 2009
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Complete Newb
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I dont want only 904cc...I want to go for the 988cc:)))) The bigger the better;) I suppose then I need to have the boring done by pros anyway:)
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Re: Upgrading kit for BA.....
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Joined: Jan 2005
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Learned Hand
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Learned Hand
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Go with the D&D kit... unless Wiseco gets their compression right ...or have they sorted that out? Did my Wiseco 904 kit this winter and cant really say i feel much difference...  Just kidding! DO IT!
Gooseman
Bonneville America 904 Black/Silver
Triumph Tiger 1050 Black
Ducati Multistrada 1200s
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Re: Upgrading kit for BA.....
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Joined: Jan 2008
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Learned Hand
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Quote:
I dont want only 904cc...I want to go for the 988cc:)))) The bigger the better;)
I suppose then I need to have the boring done by pros anyway:)
the 988 is a bore and stroke job. the BA kit just comes with the pistons and cylindre liners etc. You will have to get a crankshaft reworked to add the 6mm longer stroke. Lots more cost,, but depending on what you are looking for it may be worth the expence.
and I agree with D&D kits over the Wiseco. better pistons and nikasil liners.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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Re: Upgrading kit for BA.....
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
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Quote:
The bigger the better;)
Then you should be looking at the 1200 kit from Bonnevillperformance ... Engine Kits
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: Upgrading kit for BA.....
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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Quote:
and I agree with D&D kits over the Wiseco. better pistons and nikasil liners.
absolutely, I wish I had known that at the time I purchased mine  
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Upgrading kit for BA.....
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Joined: Aug 2005
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Loquacious
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Loquacious
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I have the D&D kit installed and they use the Wiseco pistons unless you opt for their 12:1 high compression ones. I decided to not go the high compression route and I'm totally happy with the results. Great increase in torque and it even sounds better.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: Upgrading kit for BA.....
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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My complaint is that wiseco advertises their pistons to be 10.5:1 compression and they are actually no more than stock (around 9.7:1), so it's basically only an increase in bore size. Had I known, I would have gotten pistons with a higher compression.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Upgrading kit for BA.....
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Joined: Sep 2007
Posts: 1,668
Learned Hand
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Learned Hand
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Quote:
My complaint is that wiseco advertises their pistons to be 10.5:1 compression and they are actually no more than stock (around 9.7:1), so it's basically only an increase in bore size. Had I known, I would have gotten pistons with a higher compression.
+1
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: Upgrading kit for BA.....
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Joined: Jan 2008
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Learned Hand
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Learned Hand
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Quote:
My complaint is that wiseco advertises their pistons to be 10.5:1 compression and they are actually no more than stock (around 9.7:1), so it's basically only an increase in bore size. Had I known, I would have gotten pistons with a higher compression.
If you want the scoop on the piston differences/ actual vs claimed compression just call fast fred he has difinite thoughts on this.
once I got the ignition timing controlled (so I could run on straight pump gas) my 12:1 engine runs really strong. Big difference from stock!
I do miss the exhaust smell of burning toluene though.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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Re: Upgrading kit for BA.....
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Joined: Aug 2005
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Loquacious
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Loquacious
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My preference was the 10.5:1 over 12:1 and sorry that's not what it turned out to be. BUT, the torque and Hp increase is still tremendous. I'm getting over 75 Hp and 66 ft. lbs. of torque at the rear wheel. You can definitely feel that! Just about a 40% increase. Best money I've spent on the bike.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: Upgrading kit for BA.....
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Joined: Apr 2009
Posts: 48
Greenhorn
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Greenhorn
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Quote:
Quote:
I dont want only 904cc...I want to go for the 988cc:)))) The bigger the better;)
I suppose then I need to have the boring done by pros anyway:)
the 988 is a bore and stroke job. the BA kit just comes with the pistons and cylindre liners etc. You will have to get a crankshaft reworked to add the 6mm longer stroke. Lots more cost,, but depending on what you are looking for it may be worth the expence.
and I agree with D&D kits over the Wiseco. better pistons and nikasil liners.
We are doing bb kits nikasil liners since 2002, way before D&D copy our kit.
Where you guys been all these years? 
1087cc's- 115RWHP-81.5RWTQ.Nuff Said
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Re: Upgrading kit for BA.....
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Joined: Jan 2005
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Oil Expert
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Oil Expert
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Quote:
My complaint is that wiseco advertises their pistons to be 10.5:1 compression and they are actually no more than stock (around 9.7:1)
Has this been confirmed? Have only read the rumors so far.
"Wise men speak because they have something to say, fools because they have to say something."
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Re: Upgrading kit for BA.....
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Joined: Sep 2007
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Learned Hand
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Learned Hand
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As i understand it, the math confirms it. I failed in math, but it makes sense when explained to me. 
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: Upgrading kit for BA.....
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Joined: Aug 2005
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Loquacious
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Loquacious
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I don't think there's any official word on what the actual compression is. I did a compression check on my bike and both cylinders were right at 175. That does seem more in line with what you would expect stock to be.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: Upgrading kit for BA.....
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Joined: Aug 2007
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Should be Riding
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Should be Riding
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like they are going to admit it...
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: Upgrading kit for BA.....
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Joined: Jan 2009
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Complete Newb
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Holy ****** what a price for that 1200cc kit:O
Can almost buy me a new bike, hehehehe
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Re: Upgrading kit for BA.....
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Joined: Apr 2008
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Loquacious
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Loquacious
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Quote:
Holy ****** what a price for that 1200cc kit:O
Can almost buy me a new bike, hehehehe
Two, if you pay the labor!
But I'd LOVE it, I'm sure!
And you may see me tonight
With an illegal smile
J. Prine
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Re: Upgrading kit for BA.....
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Loquacious
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expensive but can you imagine what the bike would run like with almost 100rwhp. must be insane. on a side not not sure if it has ever been confirmed about the compression of the 904
(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves
NOW-2010 silver and black tbird
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Re: Upgrading kit for BA.....
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Learned Hand
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Learned Hand
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Quote:
on a side not not sure if it has ever been confirmed about the compression of the 904
Mabye we should mail Wiseco and ask them, or has anyone tried that?
To clarify I am extremly happy with the Wiseco kit, but i would have chosen another manufacturer if i had known that the compression figures where not as stated!
/Johann
Gooseman
Bonneville America 904 Black/Silver
Triumph Tiger 1050 Black
Ducati Multistrada 1200s
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Re: Upgrading kit for BA.....
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Oil Expert
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Oil Expert
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Maybe the whole thing/rumor is just bollocks? Here's a message I found over at Delphi "Hinckley "Hot Rod" Bonnies" forums. It obviously had to do with how to measure stuff and calculating the compression. Maybe someone native in the English language could clarify? Judging from the last sentence we're good... Quote:
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MESSAGE FROM DAVE FUSSNER
Guys,
I received the OEM Triumph head and base gaskets this morning. Here are my measurements of the gaskets:
OEM base gasket (90mm bore) .011" Embossed single layer steel, coated
OEM base gasket (86mm bore) .011" Same as above, same part #
OEM head gasket (90mm bore) .037" Embossed 4 layer steel, coated
OEM head gasket (86mm bore) .026" Embossed 3 layer steel, coated
Note: The multi layer head gaskets are comprised of sections of .011" and .004" steel. The .011" sections
carry the embossments and are coated, the .004" section is flat and uncoated.
The 90mm head gasket has three .011" steel sections and a .004" section. The 86mm head gasket is comprised of two .011" sections and a .004" section.
The cylinder head gasket thickness below from Eastside Performance Motorcycles is in error. This was likely measuredover the stack of sections near the edge of the gasket. Using this method, I get .046", same as he indicates, for the 90 mm gasket. This is not the correct way to measure the thickness a multi-layered gasket as the embossments will skew the measurements even though the measurement is not taken directly over them. The correct way is to measure each section (away from the embossment) and add them together, since the embossments are pushed flat when the cylinder head is torqued. Since a dial caliper or micrometer cannot (and was never intended to) apply enough force to flatten the gasket (even at the edge) the only accurate way to determine the installed thickness is to measure each section and add them together.
Note that the 86 mm gasket is thinner than the 90 mm gasket.
These are the cylinder length measurements from Bill Gately:
Cylinder length (90 mm bore) 2.826"
Cylinder length (86 mm bore) 2.833"
Hope this helps.
DF
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and here is the previous email, sent from TJ at Eastside performance:
The dimension from base gasket to head gasket surface on the cylinder is 2.826".
I am curious as to why you wish to use a stock Triumph base gasket. If the piston is being made, then the cometic .020 gasket can be factored in ( you can sell the gasket kits that way). Since you are going from a .046" head gasket to a thinner one, keeping the base gasket thicker will keep the overall position of the head closer to it's stock position, thus keeping camshaft timing closer to its original location.
The stock gasket puts the head height in relation to the crankshaft at .013" plus 2.826" plus .046". Please make certain the engineers use a calculation that keeps at least .035 piston to head clearance and a stack of gaskets and cylinders that most closely mimics stock numbers.
Please feel free to have Dave contact me regarding this matter.
TJ Jackson
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so it sounds like the Wiseco 904cc kit is good. Mine certainly runs good.
"Wise men speak because they have something to say, fools because they have to say something."
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Re: Upgrading kit for BA.....
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Joined: Jan 2008
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Learned Hand
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Learned Hand
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if you look at the picture of the pistons in this link http://www.bonnevilleamerica.com/forums/...rt=all&vc=1the Wiseco 10.5:1 is on the left and the OEM 9.6 is on the right. Just eyeballing them shows the same open dome. I measured these up at one time and the center volume of the wiseco was larger than the OEM. the wrist pin to deck was slightly larger but only a few thousands of an inch. I have compression numbers but only for the 12:1. If somebody with a wiseco 904 and someone with a stock motor would do a compression check submit their compression figures, that migt resolve this.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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Re: Upgrading kit for BA.....
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Joined: Aug 2005
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Loquacious
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I did a compression check on my 904 and it was right on 175 for both cylinders.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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