Do you also have a baseline dyno of the stock plenum?

It would be good to have all three shown on the plot.

 

I wish I did tony, but the only baseline I have is with z tube, and ur mrev2 and 5/16 spacer (251 whp, 233 tq), next run on same dyno with the addition of intake, headers, hfc's, full exhaust, pulleys, reflash was (261 whp, 242 tq).

I wish I would have gotten a baseline dyno before I did anything, but I put on ur plenum mods almost immediately after I bought the g and i think it should have come from the factory with ur plenum mods

All 3 dynos will be overlayed on one graph-it may not be the most complete testing, but its the best that I can do, especially when the dynojet I have been using costs $200 for 3-5 pulls and that's a discounted rate

Tony, Is it possible to use your aramid gasket on top of the hondata gasket, or would that not make any sense?

 

should I even bother posting pics of the cos? Does anyone want to see a pic of anything in particular, or is everyone satisfied with the pics that have been posted so far?

 

Do you have a revup? I'm interested in your results. I'm kinda on the fence with this.

 

yes, I have a revup.

 

You're '05-'06? For what it's worth, my baseline (100% stock with 2k miles on the motor) was 215whp on Shariff's DD.

 

yes, I have an '05, thx for sharing your base number. I've heard Shariff's dyno on average reads lower than most. Do you know approx. what calculation to use to guestimate at what the 215 whp on Shariff's DD would approximately read on a dynojet?

 

Yeah, 11%~13% correction on a DD will roughly equal a DJ.

215*.11 = 238whp
215*.13 = 243whp

 

Thanks. I'm very interested in a RevUp comparison, too.

It seems that if the Cosworth is going to show top-end improvement, it would surely show an improvement over a RevUp with an MREV2 lower plenum... a plenum known to sacrifice top-end performance for mid-range power.

Sounds like you just got it. Congratulations!

I'd like to see some pictures of it after you get it installed. I don't think we've seen so many Cosworth pictures that we all wouldn't like to see a few more. Post them up!

 

$200 for a dyno session? Ouch.

But thanks for doing the comparison. In this case, anything is better than nothing.

As for the different thermal gaskets, it will probably work but I'm not sure. Just use one or the other.

I've stacked the Aramid gaskets but since they are made of the same material with the same consistancy its never been a problem.

The aluminimum, hard plastic gasket, soft Aramid gasket interface may not be a good combination.

I also found that stacking Aramid gaskets clearly had diminishing returns on overall plenum temperature. IE-the majority of heat blocking occurs with the first gasket.

Doing both gaskets in your case won't make make much of a thermal improvement and may only increase the possibility of a leak.

Tony

 

Yes, please post some high quality shots from different angles and the bottom before installation, and a couple different views (top, left side, right side, front) after installed.

Thanks

 

Tony on the spacer they are using for the aftermarket fuel rails, can you use your aramid gasket on top and bottom?
Would there be any benifet?

 

Yes. That's exactly what its for.
Benefit is 6ft-lbs more TQ, a cooler plenum assembly and more room for big injectors.

 

pics:






















































I should have some installed pics by the end of the week.

 

Overall, the fit and finish is great and the package is very complete.

The only issue I have (and it is a very, very small one) is that there is a very slight gap between the inside cf weave meets the parts of the seal. The vendor and Cosworth already kindly offered to replace the cap for my peace of mind if I so choose, but they are of the opinion that it should not affect the seal whatsoever, and I'm anxious to install it and it seems very minor:



I was thinking of using a little epoxy to bond it together. I picked this up:



Can anyone recommend anything better for bonding it, or should I not even bother? It's not very noticeable, but I want to make sure that I only have to install it once correctly and not have any problems with sealing and boost pressure once I insall a sc.

 

i would get that puppy polished before install for some extra bling.

Im not sure why anyone N/A or even mild F/I buy this plenum. from what ive seen and read, this plenum is really good for High Boost, built motor, cammed cars.

 

I was thinking of getting it polished, but I'm so anxious to install it--should be on the car by the end of the week. I should also hopefully have some dyno results to share by next week.

If it performs the same or better than the MREV2,5/16 spacer that is currently on the car, it will stay on. If I lose a decent amount of power, the MREV2 and 5/16 spacer will go back on.

 

That was quite possibly the most helpful set of pics of the Cosworth I have seen yet! Thanks

Dave

 

Wow! Now that's some respectable bling!

I never could say that about the SSV, but it certaintly fits here.

You're really doing up your ride Johnny. Amuse exhaust. Cosworth intake. What else you got going?

 

I'm thinking Volk CE28's in mag blue to offset my Endless BBK, some GT spec stuff, and hopefully the HKS GT supercharger when it is released I might also get a pair of Mine's new mettalic 200 cell HFC, as my PE ones are 400 cell to get a little mo flow.

Tony, what do you think about the minor issue with the endcap?

Can you recommend a good epoxy for the weave that would withstand the intake plenum temps? The one that I bought only says it is good to 120F.