Golf GTI 8V Performance

[Daxcossie]

I recentley purchased a Golf 8V GTI Digifant 1990 spec and was just wondering if all of the Digifant engines and Camshafts are the same.

My engine seems to pull at its hardest between 4000 and 6000 revs and below seems abit average.  There is a change in engine tone above 4000 revs (I guess its on cam above 4000 revs?)

Is there anything I can do to improve the performance lower down in the rev range as its not that easy to keep the revs up all of the time?

My old 1600 Driver was better lower down in the rev range, but would run out of puff at 4500 to 5000 I guess.

Any comments or advice would be cool.

[rubjonny]

They are indeed all the same, if your 1600 driver was better then you definitly have a problem with your engine, get the timing checked ASAP!

[Daxcossie]

The car is running well and has had the timing cheched, together with a full service etc.

 I forgot to mention that the driver had a full GTI exhaust and had been totaly stripped out, so I guess that would make a fair bit of difference.

So, are you saying that there is no difference in performance above 4000 revs on your car?

[rubjonny]

No I meant that all digifant engines are the same.
My Driver had a GTI exhaust on it, and even then theres no way my driver had more torque than my GTI does now!  Just because the timing was checked doesn't mean it was checked right   Once I adjusted the timing on my Digi it became a completly different car, it can now wheelspin in 1st

[Organisys]

Alot more poke on my 1990 digi too above 3.5k.

 

[...joe]

is there any chance your car has a fast road cam in it?  as this tends to up the powerband. mine has quite a lairy one in it but still pulls like mad from the go. and has wheelspan shifting into third so i'd agree with jonny and get it checked by someone who knows the digifant engine. if the cam was only kicking in at 400 it'd probably idle quite badly too..........

[Daxcossie]

Its tickover is ok from cold and warm etc.  Standard Cam fitted.  As far as I am aware the car is stock.  It will wheelspin in 1st and maybe even 2nd on occasion. 

I have just seen the original engine specs showing that max torque is generated @ 4000 revs and max bhp is @ 5200,  so I guess that explains. 

Maybe the 8V was designed with practicality in mind?  At low revs it can be driven without any effort and then above 4000 it presses on etc?

[Organisys]

It should pull well in fourth from about 1.5k up, mine does.
 

[Daxcossie]

As you said Organisys, alot more pull over 3500 revs in any gear.

[tc3nitro]

mine pulls well from the word go!
If anything it runs out of puff at about 5k. i have found it best to use it around 3.5k-4.5k!