conversion help pls

[fernando 0]

hi guys

was just wondering if any 1 cud help, i was interested in buying a vr6 syncro but iv noticed they are hard to come by, so i wanted to knw if i could convert ur normal 2.8 vr into 2.9 vr. Nw i nt tlaking about the syncro system itself just the engine, coz to my understanding the 2.9 lumb has a good bit more power.. so could i convert?? i know i cud increase the bore to 2.9 but what about the head i believe they have slightly different heads.. would the 2.9 fit the 2.8 block?? so basically in summary can i make a normal 2.8 lump the same as the 2.9 syncro lump with all the extra lil bells and whistles?? thanks

[legvw 0]

Its far easier and cheaper to buy a 2.9 engine and use that, rather than boring, new pistons, etc (they both use the same head), inlet manifold and t/b slightly different, ecu i think are slightly different.

[matty.vrt 120]

2.9 has slightly larger valves

[fernando 0]

hmmmm ok.. yeah i have been reading up on wikipedia (very informative by the way lol) any ways wiki says The 2.9 version had a free flowing 6 centimetres catalytic converter, sharper camshafts, 4 bars (58 psi) fuel pressure regulator, enlarged inlet manifold, and larger throttle body, and when i saw that i thawt that would be fairly easy enuf to put on the 2.8, the most work would be rebore n pistons. In your opinion would u just stick with the 2.8 lump and tinker around with that or go for the 2.9 lump, u see iv got it stuck in my head that watever i do to the 2.8 lump, if i did it to the 2.9 it would always have more power... i think from standard the 2.9 is about 20hp stronger... and another more important thing, is the 2.9 as reliable as the 2.8?

[squid1 0]

stick with the 2.8 play with her not really worth the hassle of changing the engine n ecu for 20hp, and if urs is not an obd1 ull will ave to cahnge the loom! if u was think about chaging the interanls go for f/i mate

[fernando 0]

hi squid1, thanks for that.. il do that. when u say internals, do u mean like pistons crank conrods?? oh and another thing i was just reading bout obd1 n obd2 on a thread.. which would u say is better? and is obd 1 the one with a distributor, and obd2 the one with coilpack? or is that something completely different? i knw this might sound dumb but what is f/i ?? thanks

[vr6stormt 0]

f/i is forced induction and internals is what you have said and obd1 and 2 differences are the obd2 is more of a modern engine

[fernando 0]

ok dat makes sense... wot wud u go for obd1 or 2?

[vr6stormt 0]

i got a 2 and would go for another one

[jimmyb 2]

later obd1s have coilpacks too.

[squid1 0]

i have an obd2 just a little more power an as vr6stormt said its more morden

[CALICO 130]

easier to tune the obd2

[fernando 0]

thanks alot guys that clarifies a good few things i wondered about.. cheers guys