20ser lump

[torquey]

can it be turbod i know its high compression but only after low boost on a t3?

[Sloth]

it will take 7-8psi from a t2 as the delivery isnt too laggy.

[Paul]

16 psi on a t4 with 2 headgaskets on c20ne

[Sloth]

ser has higher cr as std paul, but your way works too. or let pistons and a gt30 for 30psi and 400bhp.........

[saloonwoody]

will it run on standard managment ?

[torquey]

thats what i want to know. also will the standard head gasket last long?

[saloonwoody]

dont htink the hg will last lol

[Paul]

From first hand experience, a 2.0 8V Turbo can be built for as little as 500 quid.

If you are going to turbo a 2.0 8V then you need to use a C20NE ideally as the compression is quite low as standard.

You can use either LET pistons, which are around 50quid a set. This way you will replace rings, shells etc so is probably one of the best ways of doing the conversion.

You can use a single head gasket and run the turbo at loww boost, say up to 6-7psi.

You can use 2 headgaksets, which we had a T4 on running 16-17psi. This lasted for 6 months before my mate sold it. It was still running after that for atleast another 3 months, then we dont know (lost contact with the owner).

You can use 2 headgaskets and a spacer plate, which will lower the compression. However you are limited to boost because at the end of the day the 8V pistons are not desinged for mega boost!

To cope with the fuelling, we have always used cream injectors from an XE (as theyre cheap, and flow better than the 8V ones). A rising rate regulator, FSE, Sard etc.

The standard cam is fine for the job. Headwork will help for power obviously.

Then you use the standard management. It will run fine, well ok for a budget conversion.

Unbolt the sump, and removed the gasket/baffle/pick up pipe.

At the front of the 8V block there is a flat piece on the block in the middle. We drill with a 13mm drill bit and the weld in a tube for the oil return.

On the back of the block by the oil pump, there is an allen-head (sp.) bolt, unbolt this, and use this as the oil feed.

Then it is just a case of making a manifold for the turbo, downpipe etc and plumbing it in. We have used Escort RST manifold before (T3 Turbo) chopped the flange off and weld on the 8V one. Not great but very cheap if you can weld.

Can make some sensible power out of them and there is an astra which runs 11.7 on slicks, 12.4 road tyres with a 2.0 8V Turbo engine.

HTH

Paul