Turbo conversion

KarlM · Post by **KarlM** » Thu Mar 25, 2004 12:49 pm

Hi all,

I can pick up a G40 block for my car without the charger
After pricing the charger up (and trying to find one!) i've decided to replace it with a turbo. So i need a bit of help.

I need to source:

A metal head gasket
a smallish turbo
a custom manifold to bolt the turbo to.

Can anyone help or give advice on this conversion?

cheers

EddyH · Post by **EddyH** » Fri Mar 26, 2004 11:53 am

You're also gonna need a custom downpipe, intercooler, custom pipework, wastegate controller, DV and some kind of software.

The K03S as found on the newer 1.8T would probably be a suitable unit and can be picked used for under Â£200.

KarlM · Post by **KarlM** » Fri Mar 26, 2004 12:20 pm

Nice.

Anyone know if JBS would be capable of knocking those bits up?

polo2k · Post by **polo2k** » Sat Mar 27, 2004 2:33 pm

martin can do a new uprated one if you cross his palm with gold

KarlM · Post by **KarlM** » Sat Mar 27, 2004 5:39 pm

new uprated what? the turbo?

ask him for a price will you.

Me a Pollock are going to start on the engine next week when i change the suspension

polo2k · Post by **polo2k** » Sun Mar 28, 2004 11:01 am

ill try and remember when i speak to him next

J-O · Post by **J-O** » Sun Mar 28, 2004 1:38 pm

i know rothe motorsport makes the exhaus manifold for Polos...they should have it for G40...

hardhitter · Post by **hardhitter** » Sun Mar 28, 2004 6:21 pm

You can get new G40 chargers from germany for about 500 quid, have a look on pvw classifieds.

hayesey · Post by **hayesey** » Wed Mar 31, 2004 12:37 pm

No need for a metal head gasket by the way. A G40 one can cope with well over a bar of boost. Don't know the exact limit but plenty of people with G40s (myself included) run a smidge over a bar with no problems.

You mentioned somewhere else about needing it to lower the compression ratio as well, theres no need for that as a G40 engine already has a lowered ratio using a larger bowl in the piston crowns.

You'd only need to do that if you were fitting a turbo to a previously naturally-aspirated engine.

KarlM · Post by **KarlM** » Sun Apr 04, 2004 11:31 pm

right, just found out about a compay called Roth Motorsport that do turbo conversion kits for G40s. It includes all pipework and a K03 turbo.

anyone heard anything about them?