Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Building a World Challenge spec 2.5l motor

Hey all

Just wanted to ask some questions. We are going to be helping a local Contour race car owner build up a 2.5l motor. This is for the regional touring car series, very similar to World Challenge car specs. BTW, this is Albert Mirko's old race Contour. The current owner was running a basically stock SVT motor and was only a couple of seconds off the World Challenge cars' times at Mosport. Car is an excellent handler, just needs more power.

1. Do you know where we could get higher compression pistons?

2. The engine would need to rev to 8000rpm, maybe 8500rpm. Where could we find better rods and camshafts?

3. I can't remember whom, but we would be sending out the heads to be ported and polished, angle cut valves, etc. Does anyone remember who does this. I understand bnoon has closed shop and is no longer doing this.

Any recommendations and comments are more than welcome. This would be a complete engine rebuild.

TIA.

Pistons and rods = JE custom made

Cams - leave them in they are breathing well at the top of 10psi.

Heads - Buckshot77

Bearings - trimetal clevite

When you guys talk about bearings, which ones are you talking about?

Originally posted by Keyser:

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Pistons and rods = JE custom made

Cams - leave them in they are breathing well at the top of 10psi.

Heads - Buckshot77

Bearings - trimetal clevite

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Excellent.

About the cams, the engine has to remain naturally aspirated for the Touring Class, and that's why I was asking about higher rev cams.

Originally posted by AirKnight:

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When you guys talk about bearings, which ones are you talking about?

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I think the reference made was the crank and rod bearings.

Hmmm...I wonder who this is for?

I'll never tell!

Last time I saw them they had broken a sway bar and the car was handling all hairy. Had to cut my vist short though as my brother wrecked in his F1200 race. Car looks great though!

Chris,

Kinger is the contact on the heads. I can hook you up with some rod bearings, but the mains aren't released yet. For rods go to Cunningham as that is where I had mine built. Other than that go with a lightened flywheel, DMD, and full balancing and knife edge the crank. Oops, you can try nikolas at duratecperformance.com on the pistons and also on the bearings too.

Rick

I haven't seen any fall off when I was N/A or turbo. I can make it all the way to 7500. They appear to be approaching the plateau but I think 8k is realistic.

Chris contact me for head info. Thanks!

I contacted Crower once a/b cam info. They can do regrinds for you if you supply the core cams. Don't know how good these will be, but if it's for a race car, then you'll probably be opening the engine up often and maintaining them well.

Come to think of it... you could always contact Leo Capaldi, he's racing a Cougar in SWC. He posts alot on the NECO forums and seems to be a decent guy for info. There was another guy last year who was running an CSVT, his name is Bob Miller. Maybe he could give you good info.