Plumbing for S2000 engine
 

I am fitting an S2000 engine in my Vauxhall Chevette and I am looking for diagrams or pictures that I can find out how to plumb the engine in. I have bought the engine off a guy that was putting it in a Ford Escort MK2. Once I got the engine home I noticed that there are a lot of pipes going to water ways ect, the engine has Jenvey throttle bodies which confuses things a little for me not having an S2000 car to see where everything goes. Can anyone point me in the right direction please?

Only thing i can say is, i hope you have your engine management sorted out ahead of time. Because depending on what year the engine is there are different sets of throttle bodies etc.

The engine came with ecu and has been set up on the dyno by R.E.D and is putting out 260 bhp.

there are 4 hoses, 2 smaller ones go to the heater, the 2 larger ones obviously go to the radiator. There is also one or two that go to the intake manifold and to the throttle body, this one can be deleted. You may just want to loop the ones for the heater out and back in the engine

Cool thanks, that sheds a little more light on the situation.

Bad idea. If no heater is being used, block the lines. Do not loop.

If this Chevette is anything like the Chevy Chevette they sold in the US back in the 70s and 80s, I hope your life insurance is paid! My kids had a Chevy Chevette for a short time (that's about all they were good for). It was the flimsiest piece of crap I have ever driven. 260 hp would have shredded that thing.

Why? Please explain why it is a bad idea. I don't see any technical reason it would matter. It is just 6-8" of hose to loop it at the block.

Why? Please explain why it is a bad idea. I don't see any technical reason it would matter. It is just 6-8" of hose to loop it at the block.
[/quote]
Think about how coolant flows through the engine.

Looping the heater hoses short-circuits the radiator and feeds hot coolant back into your engine. Not a good idea, unless you want to increase the chances of overheating your engine.

I see you point. The heater is separate fluid path, but the valve stops the flow when not the heater is not use.

But in reality I have not seen it to be an issue in the last 6 years. Mine is looped and I live in Texas and run on the track in July. Water temps are never far about 200. So WOT for the most part of a 25 min session has shown to be a non issue with a looped system.

But you do make me want to remove the loops to see if there is a difference. Add that to my list of stuff to do