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General => The garage => Topic started by: ajgti 16v on 13 March 2009, 22:23

Title: 8v to 16v mk2 conversion
Post by: ajgti 16v on 13 March 2009, 22:23

HI there ,I have carried out a engine conversion from a 2.0 8v seat engine to a 1.8 16v gti engine
the reason for the conversion was a ecu failure with the 2.0 8v engine which was taken originally out of a 99 seat .
Luckily I had a mk2 16valver in my shead so carried out the conversion a.s.a.p
the loom and all usual was changed by a vw mechanic,the timing belt and service has been done all vaccum pipes have been checked also. the car will turn over but will not pick up power when the boot is put down.I would be very greatfull of any help or ideas that may help .
Thanks  P.S. the engine im using now is a 1988

Title: Re: 8v to 16v mk2 conversion
Post by: Adam on 14 March 2009, 00:58

EDIT:just re-read it....so my input was useless.

Title: Re: 8v to 16v mk2 conversion
Post by: danny_p on 14 March 2009, 11:40

its timeing related,    probaly spark

Title: Re: 8v to 16v mk2 conversion
Post by: oakgreengolf on 14 March 2009, 19:44

did the fuel pump get changed?

Title: Re: 8v to 16v mk2 conversion
Post by: rubjonny on 16 March 2009, 08:30

^^ very good point, 8v pump & lines are no good for a 16v, pressure not high enough.

Title: Re: 8v to 16v mk2 conversion
Post by: ajgti 16v on 16 March 2009, 19:07

hi ,cheers for the ideas ,yeah i changed the fuel pump to 16v ,it was the in tank pump .the other pump remains standard,
I beleive the timing was checked .what would the chances be that it is fuel realted?????? thanks

Title: Re: 8v to 16v mk2 conversion
Post by: danny_p on 16 March 2009, 23:45

ahh,  the lift pump ( in tank is same  8 or 16v  ) the under car pump is massivly diffrent.   8v = 3 bar  16v = 6-7 bar