You never do things by halves do you Andrew?!

Quote:

I bought mine from the USA mate. I assumed they were made there.

I had one 12" and one 10" Davies Craig fans on my car and I was never happy with them at idle. I swapped to a 9" and a 10" SPAL and the car has no issue staying cool idling in the middle of summer now. Plus they are quieter.

They aren't much dearer than buying the cheaper branded fans if you buy them directly from their US website.

Fair enough mate. But given how much of a pain in the arse it is to change a clutch once the engine and box are in the car and your power goals I would save a bit more and go with a better rather than budget option.

10 degrees btdc for the ignition timing.

I stuffed around for years with Davies Craig and other cheaper brands of fans with unsatisfactory results. 18 months ago I bit the bullet and bought a couple of SPAL fans directly from their US website. Cost was under $300 for both delivered and they are by far the best fans I have ever used on any car.

Talk to Jim Berry at Race Clutch. My clutch is still going after 7 or 8 years of being driven hard at motorsport events.

http://www.motorsportworld.com.au/outlets/raceclutch/

OK mate

I'm guessing by your initial comments you are after 300hp at the flywheel with potential for more if required.

An S15 style GT28R 320hp turbo will get you there but will need around 20-22psi and won't give you much head room. My CA makes 182rwkw on 20psi (approximately 290HP at the flywheel based on a driveline loss figure of 20%). To achieve this figure required a Nistune computer, GTR injectors, Bosch O40 fuel pump, exhaust camshaft on the intake side with adjustable cam gears. There are also the usual changes like a forged pistons, 3" exhaust, intercooler etc too. Both manifolds, head gasket and internals (excluding the pistons and rings) are stock Nissan gear just rebuilt carefully.

My choice would be a GT28RS 350hp (also known as a GT2860R or disco potato). The increase in lag over the S15 turbo will be minimal with plenty of grunt under the curve. To the modifications listed above I would then add a 6Boost exhaust manifold, lightly clean up the head, larger injectors and a larger fuel pump and run the car on E85 fuel. It will make your initial power requirements with head room to spare and run cooler than on 98 octane premium unleaded while being very responsive and fun to drive.

A GT2871R will obviously give you a higher peak power figure but may be getting too laggy for a street driven car. This may not be an issue for you but try and get a passenger ride in a couple of cars to get an idea before spending your hard earned on the wrong turbo.

The rest is all pretty standard fare - forged pistons with matching rings (plenty of available options), fresh bearings, new or rebuilt oil pump, new water pump, new hoses and gaskets and belts. The stock rods will live at these power levels provided they are checked and prepped but the Spool options offer great bang for your buck especially if you end up with a larger turbo, big cams etc that require you to rev it north of 8000rpm.

Matty

Quote:

Have you thought about these questions? Have you discussed them with your engine builder?

Regardless of how good he is at building motors these are things you should discuss before any work commences. For example you could potentially end up with a motor set up for drag racing when you want to compete in lap sprints.

There are plenty of us on here who have been through this with CA18DETs and there is a lot more to it than simply throwing a set of forged pistons and a rebuild kit at it.

Are you chasing 300hp at the wheels or flywheel?

What will the car predominantly be used for?

What sort of compromises in power delivery can you live with?

What's your budget?

I run GTR 440cc injectors on mine which has been dynoed at 182rwkw.

Be sure to replace the plugs as they will be hard and brittle by now. They are around $5-$8 each from injection shops.

Also, have a professional clean, flow test and replace the O rings before fitment. Cost will be $25-$40 per injector.