 Re: 904 so it begins......
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Joined: Jul 2008
Posts: 1,440
Learned Hand
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Learned Hand
Joined: Jul 2008
Posts: 1,440 |
'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy
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Re: 904 so it begins......
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Joined: Jan 2005
Posts: 3,753
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 3,753 |
you can go 989, 1100, or 1200
(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: 904 so it begins......
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Joined: Feb 2009
Posts: 17
Complete Newb
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Complete Newb
Joined: Feb 2009
Posts: 17 |
If you can aford it,the 989 stroker is the best kit of the bunch.Check out the increase in torque over the other kits plus the hp isnt bad either.I installed a 904 kit in my Speedmaster and the difference was amazing but i still would like more torque.I run a 19 tooth sproket and lost a little stoplight acceleration but made it a pleasure to ride long distance and made it smoother with the throttle response.Would never think about going back to the 17 tooth but would like a little more torque and the 989 would be the ticket.
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Re: 904 so it begins......
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Joined: Sep 2007
Posts: 1,668
Learned Hand
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Learned Hand
Joined: Sep 2007
Posts: 1,668 |
Yeah, a 989 would work, but it looks like for only about $7000.00, you could have a 1200cc monster with like 10 or 15 more horses...  I'll pass!
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: 904 so it begins......
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
Joined: Mar 2007
Posts: 5,616 |
yeah...once you have to crack the case its all over. The $$ go up and the work seems to be similar. So according to BPs link there anything over the 904 involves cracking the case and if your going that far why stop at a 989 when you can go 1200. I hate being OCD  Has anyone taken an 865 and gone up to a 904? Is it worth it or not?
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: 904 so it begins......
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Joined: Feb 2009
Posts: 17
Complete Newb
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Complete Newb
Joined: Feb 2009
Posts: 17 |
I guess it would depend on how much you like Triumph and willing to do to have the best air-cooled parallel twin on the road.Its like those guys that would spend big bucks on hot rodding a V W van.Makes no sense to most people except the person doing the mods.
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Re: 904 so it begins......
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Joined: Jan 2005
Posts: 3,753
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 3,753 |
i'll eventually go the 1100 rout. stock stroke so no need for the 3k crank
(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: 904 so it begins......
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Joined: Feb 2009
Posts: 17
Complete Newb
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Complete Newb
Joined: Feb 2009
Posts: 17 |
I believe anything over the 904 piston size would be a little risky until theres more feedback on them on the road as far as longevity goes.Larger pistons means more weight,heat,and bigger clearences of the piston and rings which means more piston slap and oil burning until it warms to operatin temp.When i installed my 904 i thought the pistons were the wrong size because of the needed clearences of an air cooled motor.Just my 2 cents worth 
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Re: 904 so it begins......
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Joined: Aug 2007
Posts: 10,728 Likes: 5
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,728 Likes: 5 |
Quote:
i'll eventually go the 1100 rout. stock stroke so no need for the 3k crank
that may be what I do years on down the road, with those nice billet cylinders.
Quote:
Has anyone taken an 865 and gone up to a 904?
Is it worth it or not?
For anyone interested, Fast Freddy is in the process of testing 10.5:1 compression pistons for the 865 right now, I think when I spoke to him last he had at least 100 sets to sell. That was a few weeks ago, and he told me he was going to try and destroy the motor to see if the pistons will hold up, he seemed pretty confident that they will last. Sounds like a very affordable upgrade with no machine work to deal with, pretty much drop in new pistons and go.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: 904 so it begins......
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Joined: Aug 2007
Posts: 10,728 Likes: 5
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,728 Likes: 5 |
I'm planning on calling Freddy this afternoon, I will post more info on the high comp 865 pistons when I hear from him.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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