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2.5 -> 2.8 conversion

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Old 10-15-2004, 03:47 PM
  #46  
evil 944t
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To get the most out of your conversion, your turbo will be to small airflow wise. Also your maf and chips will out of there range

As far as the clutch goes you might be ok. No drag racing style driving! 2.8 will produce alot of torque ask David floyd.
Old 10-15-2004, 04:04 PM
  #47  
David Floyd
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Originally Posted by evil 944t
As far as the clutch goes you might be ok. No drag racing style driving! 2.8 will produce alot of torque ask David floyd.
I have already gone thru 2 clutches Cup disk, might have been a defective disk ? the the material separated from the metal part of the disk and a Kevlar disk which slips under power.

Third clutch is on order now.

TO4B is not much larger than a K26, so too small for 2.8, not that you could not run it, just not getting full power from the 2.8.

Are your sure you have a TO4B ? the one I had was a 2.75" inlet.

Pic shows TO4E- TO4B- Stock K-26

Old 10-15-2004, 04:07 PM
  #48  
NZ951
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Hmmmm I have just ordered a Cup disk...
Old 10-15-2004, 04:55 PM
  #49  
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So would the a T04E work well than?

Would the vitesse kit work with the 2.8?

I have the MAF, and turbo. The injectors should already be upgraded on the car.
Old 10-15-2004, 07:16 PM
  #50  
fast951
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Originally Posted by v944god
So would the a T04E work well than?

Would the vitesse kit work with the 2.8?

I have the MAF, and turbo. The injectors should already be upgraded on the car.

Stage 2 is not a good match for a 2.8l.. It works, but will limit you HP wise.. The hot side (housing/wheel) is not ideal as well as the compressor..
When going to a 2.8l you need a matching setup.. Also, 2.8l stroker, requires different timing than the 2.5l...
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Old 10-15-2004, 07:55 PM
  #51  
David Floyd
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Originally Posted by fast951
Stage 2 is not a good match for a 2.8l.. It works, but will limit you HP wise.. The hot side (housing/wheel) is not ideal as well as the compressor..
When going to a 2.8l you need a matching setup.. Also, 2.8l stroker, requires different timing than the 2.5l...
v944god, this is exactly what I did. I sold the TO4E in the pic above and the Huntley stage 4 MAF that I was using on the 2.5 and went with Vitesse Racings stage 4 MAF, turbo and SMT 6 that is set up for a 2.8.

Now if I can get a clutch package that can handle the torque, I will post a dyno sheet showing what a complete Vitesse kit can do with the 2.8.
Old 10-15-2004, 07:57 PM
  #52  
NZ951
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Why use sprung clutches?
Old 10-15-2004, 08:01 PM
  #53  
David Floyd
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Originally Posted by NZ951
Why use sprung clutches?
Well... it is 95% street, but I do have a spring center 6 puck on the way.
Old 10-15-2004, 08:06 PM
  #54  
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Nice, will be interesting to see how it goes... are you just replacing the disk?
Old 10-15-2004, 08:16 PM
  #55  
David Floyd
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Originally Posted by NZ951
Nice, will be interesting to see how it goes... are you just replacing the disk?
Yes, the pp I have only has 2k miles on it and is 30% stronger than stock, so hopefully the disk will cure the problem.
Old 10-15-2004, 08:55 PM
  #56  
rage2
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For clutches, the discs are fine. It's the pressure plate that needs upgrading. Move to a KEP pressure plate and you're good to go even with the Cup clutch disc.

And if I had to do it again, it'd be a turbo or S/C V8 swap. Screw all this big $ investment and still getting lag... nothing beats having 400ft/lbs of torque at 1500rpm!

Last edited by rage2; 11-22-2004 at 04:35 PM.
Old 10-15-2004, 09:27 PM
  #57  
David Floyd
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Originally Posted by rage2
For clutches, the discs are fine. It's the pressure plate that needs upgrading. Move to a KEP pressure plate and you're good to go even with the Cup clutch disc.

And if I had to do it again, it'd be a turbo or S/C V8 swap. Screw all this big $ investment and still getting lag... nothing beats having 400ft/lbs of torque at 1500rpm!
I did upgrade pp to 30% stronger, KEP is 37% stronger, so if the one I have won't hold with the new disk, I will leapfrog the 37% KEP to something in 50% range.

I agree with you Rage on the V8
Old 10-15-2004, 09:30 PM
  #58  
rage2
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I have the KEP 3800lb unit. Is that the 37% stronger one you're talking about? I have no clue what stock is...
Old 10-15-2004, 09:33 PM
  #59  
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I ordered a light weight KEP PP too! Cant wait to get it in! TIM SEND IT PLEASE!
Old 10-15-2004, 09:35 PM
  #60  
David Floyd
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Originally Posted by rage2
I have the KEP 3800lb unit. Is that the 37% stronger one you're talking about? I have no clue what stock is...
I was going by this at Paragon no mention of lbs just %

http://www.paragon-products.com/product_p/kep944.htm


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