View Full Version : VW v Audi v Seat 20v
Anybody know the main differences the same 1.8T 20v engines ?.
The Vw and Audi versions perform very well compared to the seat after a chip ?.
Anybody agree ?
errrr.
The main difference is the lack of difference between them... :rolleyes:
The 1.8 Vag unit comes in various states of tune though:-
150/180/210/225
Depending on turbo / intercooler types.
An Audi "180" is the same as a SEAT "180" is the same as a Skoda "180" etc etc etc....
Hi
150 BHP and 180 BHP engines have Warner KO3 turbo with single intercooler
210 BHP and 225 BHP engines have Warner KO4 turbo with dual intercooler
These are the main differences, hope it helps.
BTW neuspeed to KO3 to KO4 turbo upgrade kits.
dean:)
Some of the engines have VVT and some don't.... it appears that the Ibizas 1.8T doesn't but some or all Leon 1.8Ts do! :(
I'm not sure about the Golfs, but I bet the Audis get the VVT version.
Now why didn't they put the VVT version in the Ibiza? :(
Ben
Ben
Probably because of the cost involved.
Its not a "normal" VVT as per the Honda V-Tec.
It uses a different design to lengthen the duration of fuelling.
I believe also that the engine wouldnt fit:( Having seen the Leons their engines (compared to ours) are mounted back to front, with a different layout of the inelt manifold, turbo tracts etc.
I think MarkAPR will know the true answer tho.
I may be just talkin out of my arse.
ibizacupra
04-02-2002, 10:53
Originally posted by Saul
Ben
Probably because of the cost involved.
Its not a "normal" VVT as per the Honda V-Tec.
It uses a different design to lengthen the duration of fuelling.
I believe also that the engine wouldnt fit:( Having seen the Leons their engines (compared to ours) are mounted back to front, with a different layout of the inelt manifold, turbo tracts etc.
I think MarkAPR will know the true answer tho.
I may be just talkin out of my arse.
I would expect the back to front nature of the inlet manifolding to be just a bolt on - unbolt affair. The major difference being inlet manifold orientation. Swap the parts and it points the right way again.
As for ECU and control of the extra solenoid for the V V T and well..... I don't know enough about it to comment.
Must be doable. everything is doable..eventually.
regards
Bill
Revo Mark
04-02-2002, 21:50
Hi Guy's
As Bill stated the the manifold orientation is purely a bolt on issue. The VVT system is nothing more than a solenoid that opperates at a certain RPM point and controls the oil pressure to the timing chain tensioner between the two camshafts. As the tensioner applies more pressure to the chain, this inturn alters the phase angle and increases valve overlap. We have played with this switching point during testing but did not find any significant gains. Also on the VVT motor, the K-03 compressor as a slightly different make up regarding compressor housing and turbine wheel trim. This is why this particular motor hangs onto it's power a little longer. For this reason we increase the RPM limit by a further 240rpm over stock.
hope this helps!
regards
Steve3961
04-02-2002, 21:53
Originally posted by Mark APR
Hi Guy's
As Bill stated the the manifold orientation is purely a bolt on issue. The VVT system is nothing more than a solenoid that opperates at a certain RPM point and controls the oil pressure to the timing chain tensioner between the two camshafts. As the tensioner applies more pressure to the chain, this inturn alters the phase angle and increases valve overlap. We have played with this switching point during testing but did not find any significant gains. Also on the VVT motor, the K-03 compressor as a slightly different make up regarding compressor housing and turbine wheel trim. This is why this particular motor hangs onto it's power a little longer. For this reason we increase the RPM limit by a further 240rpm over stock.
hope this helps!
regards
So what you are saying is that the VVT 1.8T has a kind of hybrid ko3 when compared to the standared k03?
Thus making is more tunable
Revo Mark
04-02-2002, 23:09
So what you are saying is that the VVT 1.8T has a kind of hybrid ko3 when compared to the standared k03?
Correct..
Is there any way to find out for sure if your leon has vvt or not?
A while back there was a thread about finding
out if your Leon has VVT or not.....
The conclusion was with year model (sometimes not)
and Engine serial number....
2000 engines do not have VVT ,some of 2001 do,and all
2002 engines have it...
or simply AUQ appearing in your engine's Serial would indicate
VVT too (not allways as some of us in diffrent countries have
diffrent letters ie ARQ or something)
The thread is probebly in Leon threads somewhere....sorry
i am too lazy......
:D
as for APR....they do mantion something on their site about the diffrent versions of the 1.8T engines...
The one is Longitudal....thats the older one i assume
And Transverse being the newer one.
Something with the manifold sitting in a diffrent place was the only thing i understood....:)
and that a Transverse engine has more potential over the older
one.
And i will have to point out a big well done for their stage III
Transverse kit.....very impressive....and very tempting
and Very cheap for what you get....spot on.
And Mark from APR you are reading it.......whats the limit
for a 4WD (4motion) when tuning ?..and how will it be diffrent?
:cheers: