 TPUSA T-515-S cam
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Joined: Feb 2005
Posts: 209
Adjunct
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OP
Adjunct
Joined: Feb 2005
Posts: 209 |
Anyone out there ever tried the 515 cam from TPUSA? The brief wright-up says "...developed to produce good low end + mid range torque without the lost of drivability throughout the entire RPM range." I would be interested to hear from anyone who has any feedback on this cam?
'06 SM with T100/America Wheels (D&D's, 10.5 to 1 Wiseco pistons, TTP Igniter +3, K&N PODS, 150 x 40, FZ1 springs & TBS needles w/3 shims)
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Re: TPUSA T-515-S cam
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Joined: Aug 2007
Posts: 10,730 Likes: 5
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,730 Likes: 5 |
You know what would be nice? If these companies that want you to pony up $700 or so would actually give some useful info on the products they sell.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: TPUSA T-515-S cam
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
I have the TPUSA 813's in my 07/865. Other than a bit more valve train noise, there are NO downsides. Personally, I don't think you can do any better than that.
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Re: TPUSA T-515-S cam
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Joined: Jan 2008
Posts: 1,174 Likes: 15
Learned Hand
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Learned Hand
Joined: Jan 2008
Posts: 1,174 Likes: 15 |
Quote:
You know what would be nice? If these companies that want you to pony up $700 or so would actually give some useful info on the products they sell.
Thunderbike has the dyno sheets for their cams on their site. I wonder why TPUSA doesn't do that?
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: TPUSA T-515-S cam
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
The chief wrench at my local shop tested TPUSA 813's v. T-bike cams in his personal 904/270, & the 813's did 1 to 2 HP better than the T-bike cams did, just about everywhere.
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Re: TPUSA T-515-S cam
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Joined: Feb 2006
Posts: 3,099
Loquacious
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Loquacious
Joined: Feb 2006
Posts: 3,099 |
I'm no expert, but I believe the 813's are the 790 cam grind. Correct me if I'm wrong. Uncle Charlie 
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Re: TPUSA T-515-S cam
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Nope. Consider yourself corrected 
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Re: TPUSA T-515-S cam
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Joined: Aug 2007
Posts: 10,730 Likes: 5
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,730 Likes: 5 |
from what I understand the 813s have more lift and duration than the 790s?
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: TPUSA T-515-S cam
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
The T-bike cams perform about the same as the 790 cams. As stated above, the 813's do a little better.
As a general rule, I understand that TPUSA does not release the grind spec to those who don't buy the cams. Why? I have my theory, but you need to ask them.
Better cams are necessary for 865's (& 865 based BB's) in order to make the most out of the motor; with 790's, the OEm cams are already good.
What I can tell you with certainty is that I have no regrets with the 813's & would do it again without hesitation.
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Re: TPUSA T-515-S cam
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Joined: Apr 2009
Posts: 48
Greenhorn
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Greenhorn
Joined: Apr 2009
Posts: 48 |
Quote:
You know what would be nice? If these companies that want you to pony up $700 or so would actually give some useful info on the products they sell.
1087cc's- 115RWHP-81.5RWTQ.Nuff Said
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Re: TPUSA T-515-S cam
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Joined: Apr 2009
Posts: 48
Greenhorn
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Greenhorn
Joined: Apr 2009
Posts: 48 |
Quote:
Quote:
You know what would be nice? If these companies that want you to pony up $700 or so would actually give some useful info on the products they sell.
Thunderbike has the dyno sheets for their cams on their site. I wonder why TPUSA doesn't do that?
I have the dyno runs with the power pack and power pack and 813 cams for more than 2 years in the website
1087cc's- 115RWHP-81.5RWTQ.Nuff Said
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Re: TPUSA T-515-S cam
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Joined: Jan 2008
Posts: 1,174 Likes: 15
Learned Hand
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Learned Hand
Joined: Jan 2008
Posts: 1,174 Likes: 15 |
Quote:
Quote:
Quote:
You know what would be nice? If these companies that want you to pony up $700 or so would actually give some useful info on the products they sell.
I do not see the dyno chart for the 270 motors, the only link I find is from the bonneville 360 motor. If there is another link please provide it.
Thunderbike has the dyno sheets for their cams on their site. I wonder why TPUSA doesn't do that?
I have the dyno runs with the power pack and power pack and 813 cams for more than 2 years in the website
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: TPUSA T-515-S cam
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Joined: Jan 2005
Posts: 1,204
Learned Hand
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Learned Hand
Joined: Jan 2005
Posts: 1,204 |
I have been building race(car) motors for around 20 years and for as long as I can remember, when you bought a cam from one of the aftermarket companies you received the spec sheet with it. You could also go to your local speed shop and look up the company and cam specs that you wanted. As a matter of fact, the aftermarket cam makers for Harley engines will give you the specs so you can make an informed decision on what type of cam you'll need for the power band you will be riding in. So why is TPUSA keeping theirs a secret?......Angelis
1200CC BIG BORE, W/WISECO PISTONS,.250 STROKED CRANK, PORTED/POLISHED HEADS AND LARGER VALVES, CUSTOM WELDED EXHUAST, DUAL 42MM MIKUNI CARBS.
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