did boost test, anyone help me out ..

[Aaron10 10]

So after collecting my first ever corrado g60 2 days ago and knowing nothing about them I performed the mfa boost test tonight and dont think these reading are right. Can I ask on everyones advice and next course of action please.

 

Rough spec..

68mm pulley

schrick cam

green injectors

bored out to 1900cc

wossner pistons

new charger

 

on idle it read 1180 and to redline in 3rd and 4th it read 1120

 

im assuming its not good and for me the car dosnt feel quick but have never drove one, felt sluggish and struggled 100 and beyond.

 

letme know opinions please and what to do.

 

thanks Aaron

[volksworld13 0]

Check ignition timing

[Aaron10 10]

Check ignition timing[/QUOpTE]

 

easy to check or mechanic?

[dr_mat 0]

"doesn't feel fast" means a lot of things.. what are you used to? I think you might get about 180bhp out of a 68mm pulley car, from what I recall, so.. what does "struggled 100 and beyond" mean? I assume you mean it wasn't accelerating hard above 100mph?

 

 

A Corrado is for life, not just for the MOT.

[Geeba 0]

That spec car should feel pretty swift... not sure on the green injectors for the other hardware you have thou, a standard charger just isn't shifting enough air to justify them... my 18T rolled 240Bhp on the standard injectors and I've seen BAM engines go over 300 with the duty cycle on the the stock injectors and indeed a 230bhp Golf G60 on standard injectors- I'd be more worried of bore-wash.

 

Check over the basics, plugs leads, vacuum hose leaks and like suggested the timing, then to be safe get it to a specialist and let them give it a once over and throw and oil change and service at it maybe.

[Dox 23]

I'd start with a full service, compression test and check the timing belt to make sure the cam's not a tooth out, make sure the basics are correct before looking for lack of boost.

[Aaron10 10]

"doesn't feel fast" means a lot of things.. what are you used to? I think you might get about 180bhp out of a 68mm pulley car, from what I recall, so.. what does "struggled 100 and beyond" mean? I assume you mean it wasn't accelerating hard above 100mph?

 

Yea it seemed quite slow and sluggish after 100mph.

 

Ok I will do full service and take it from there. Hopefully any mechanic will be able to check all the above things as I don't think there are many in Northern Ireland who specialise in G60's

[chaos3oe 0]

I would also start with the full service, should do with any car when you get it regardless of what the history says. As part of that service I would replace all the vacuum lines on the engine, including the one to the ecu for the MAP sensor. Open the ecu (ground yourself first) and remove and clear out the 6 inch length of vacuum tubing in there which runs from the case nipple to the map sensor. All these can get clogged up with oil sludge which means the map doesn't get a reading, which it seems from the readings you gave yours isn't. Once done full setup of timing etc, google for correct method for Digifant, needs to be done properly. After that re run your boost test, see what readings you get then.

[Aaron10 10]

I would also start with the full service, should do with any car when you get it regardless of what the history says. As part of that service I would replace all the vacuum lines on the engine, including the one to the ecu for the MAP sensor. Open the ecu (ground yourself first) and remove and clear out the 6 inch length of vacuum tubing in there which runs from the case nipple to the map sensor. All these can get clogged up with oil sludge which means the map doesn't get a reading, which it seems from the readings you gave yours isn't. Once done full setup of timing etc, google for correct method for Digifant, needs to be done properly. After that re run your boost test, see what readings you get then.

 

Ok thanks for that, im in the middle of ordering up service parts now. With regards to changing the vacuum lines can replacments ones be sourced?

[chaos3oe 0]

3.5mm Inside diameter vacuum pipe, you buy it by the meter and cut to length to match the old ones. Make sure the line to the ECU is exactly 1 meter long.

Edited July 7, 2017 by chaos3oe