S2000 Racing and Competition The S2000 on the track and Solo circuit. Some of the fastest S2000 drivers in the world call this forum home.

F24 stroker kit for race use

Thread Tools
 
Old Jun 18, 2015 | 07:28 PM
  #71  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

Also interesting...the AEM video on their new Infinity ECU:

[media]http://www.youtube.com/watch?v=Xou5u9DaH2Q[/media]
Reply
Old Jun 18, 2015 | 09:04 PM
  #72  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

Originally Posted by miamirice
I have always been told the intake for the F motor was the bottle neck. ITB's seem expensive so I would like to see what comes of this:

http://cms.skunk2.co...ntake-Manifold/
I wonder what size it is and what throttle body they recommend. The 00-05 models came with a 64mm diameter manifold bore and 62mm throttle body. The 06-09 came with a 69mm bore and 65mm throttle body. There are 70mm aftermarket throttle bodies and Ballade has an 00-05 intake manifold with a 69mm bore.

They didn't increase the rated power, but intuitively it looks like the 06+ models would flow more air, about 10% more area. The 70mm TB is 27% bigger than an 00-05. The ITB Hypertech used (from Jenvey in the UK) uses 4 51mm throttle bodies. It does have an air filter available, but isn't ducted to outside air. Fabricating one from aluminum or stainless shouldn't be that hard.
Reply
Old Jun 18, 2015 | 09:56 PM
  #73  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

While I'm not doing work...Ballade has a K24 to S2000 kit with motor mounts, flywheel, intake manifold (it points in the other direction after all), and a variety of small bits. Price: $3700. http://www.balladesp...-k2024-swap-kit

KMOD's K24 Stage 3 crate motor, about the requested power level, is $7400 and may be less since some of the parts aren't used in an S2000 or overlap the k24 to S2k kit. http://www.kmodperfo...te-Engines.html
Reply
Old Jun 19, 2015 | 04:30 AM
  #74  
Mrsideways's Avatar
 
Joined: Jul 2002
Posts: 2,724
Likes: 42
From: Orlando
Default

I tried ordering a Ballade sports header. I got a bit of a run around for timing. I don't want to talk bad about them because everyone was super nice there and they refunded my money quickly. But it said it was in stock when I ordered it and 4 or 5 weeks later I still got a different story every time I called. Ultimately the ASP header took longer and was twice the price but I got a clear cut date of production when I ordered and they stuck to it.
As for the intake being the bottle neck, Yes I'll attest to that. One of the changes I made to pick up 30hp over the last trip to the dyno was intake manifold. The xecessive manifold is really a nice peice. The header wasn't a large enough difference to be much of that 30hp and the Cams were .03 more lift. I'm gonna say a majority of that HP was Intake Manifold.
Reply
Old Jun 19, 2015 | 09:57 PM
  #75  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

A Wadzii question:

It looks like the AEM Infinity is the hot item. Would it its compensation mechanisms and multiple profiles be especially useful in miamirice's endurance racing? Would he be able to switch profiles while on the track from the cockpit?

The Infinity has a traction control...does it compare favorably to the Race Logic traction control? Would the driver be able to change the percent slip while running on the track? Race Logic has a knob for that...working on a random fuel injection interruption.
Reply
Old Jul 22, 2015 | 02:58 PM
  #76  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

Does your K24 have the iVTEC running? I had a discussion earlier today that drifted into Honda cams and one of the points made is that the iVTEC makes a K-series better than a stroked F-series.
Reply
Old Jul 22, 2015 | 03:00 PM
  #77  
wadzii's Avatar
Banned
 
Joined: May 2002
Posts: 3,624
Likes: 11
From: Raleigh, NC
Default

With bigger cams vtc doesn't make that much difference
Reply
Old Jul 22, 2015 | 04:33 PM
  #78  
DavidNJ's Avatar
 
Joined: Apr 2006
Posts: 1,953
Likes: 51
Default

Originally Posted by wadzii
With bigger cams vtc doesn't make that much difference
The conversation was rambling and my contribution was listening and a few questions. The comments were that the engine is very sensitive to cam timing and that the iVTEC variable cam timing was very effective in filling in the mid-range.

Are your experiences different?
Reply
Old Jul 23, 2015 | 09:54 AM
  #79  
Mrsideways's Avatar
 
Joined: Jul 2002
Posts: 2,724
Likes: 42
From: Orlando
Default

Originally Posted by DavidNJ
Originally Posted by wadzii' timestamp='1437606020' post='23689605
With bigger cams vtc doesn't make that much difference
The conversation was rambling and my contribution was listening and a few questions. The comments were that the engine is very sensitive to cam timing and that the iVTEC variable cam timing was very effective in filling in the mid-range.

Are your experiences different?
He's correct, from what I've learned the bigger the cam the less the VTC matters.
Reply
Old Jul 23, 2015 | 09:57 AM
  #80  
Mrsideways's Avatar
 
Joined: Jul 2002
Posts: 2,724
Likes: 42
From: Orlando
Default

Originally Posted by miamirice
Originally Posted by DavidNJ' timestamp='1434429397' post='23649618
Strokers work but don't the HC1 rules require stock components? A strokers allowed? It is possible to build a 2.4 stroker with a TSX crank and Prelude rods and pistons, most of the parts requiring machining, but I don't think that would be a reliable high rev solution. It is probably more of a street solution.

The rules don't seem to spec reciprocating weight so I imagine keeping everything light, cleanup, x-ray'd for crack detection, cryo'd, and then revved high would probably be the better solution. After all of this, is an S2000 competitive in HC1? Is there a viable HC1 class were you race?
It would not be built for HC1. It would be for FARA (1.8-2.5L) NA. I think it fits STU with SCCA as well. But none of this matters if it won't have the reliability of a motor like a k24 or k20 with cams which seem to hold up very well.
STU requires Stock Crankshaft to the block. So you can't Stroke in STU... Hence why my car has a K24 in it. Stupid rules IMO but it is what it is. Then again they also say "STOCK" turbo. But if your friends with certain people , certain cars are suddenly allowed turbo changes..... Hence why I'm steadily saying BYE BYE to SCCA.
Reply



All times are GMT -8. The time now is 03:56 PM.