Pretty sure i've read some where that the answer is
Im probally wrong though

http://www.auszookers.com/index.php?nam ... hlight=gti

i missed out on a twin cam motor today, was 400 dollars,
was gonna put in on the 1.6bottom end to gain a bit more power.
oh well next time

Its a worthless modification if you ask me. The money would be better spent elsewhere.

street cred...

righto, cause we put a g16b in a few months ago, and then when i sore the twin cam motor for sale i thought it would be a decent power in crease, cheers guys

Search my posts, I'm sure I've whinged about the poor performance of mine when the conversion was done more than enough times.
g16b/mk1 gti - 48kw at the wheels.

To me, thats a big FAIL for a performance mod.

^^ realy??? i think the dyno was lieing.

based on what?

based on what?

the 47kw they make factory.. brand new at the fly.. then add to that the ruffly 30% power loss though the drive train.. and i will assume your on stock wheels and tires????

so to get that much at the wheels u would need to be around the 65kw mark.. that's a MASSIVE power increase over stock with just a crabi and exaust.

not saying its not possible im just saying that its a HUGE jump.
dyno's can be made to lie very easy!

im not saying your lieing.. im just saying that's a amazing output.

and having owned a sierra with a webber extractors etc it did get along quite well.. but nothing close to what my coily does. and i would only expect around 45ish kw at the wheels.

oh and yeah i do know a bit about this, i have owned 5 sierras now.

You have had 5 sierra's hey? How many have you put and played with on the dyno's? A few years back I was lucky enough to have to opportunity to play with/on a dyno (as I was building/calibrating the hardware/software for the dyno itself). Also for such a simple to set up carb it also ceases to amaze me how many get its super super wrong and thus run like dogs! Thirsty dogs!! But yes I have seen a few other dyno results for zuks with the same set up, they aint that far off! Also btw how close do you think the stock power output figure is to the actual? Just remember many engine come out of the factory de-tuned and choked to the max for emissions and durability sakes.

Dan

You have had 5 sierra's hey? How many have you put and played with on the dyno's? A few years back I was lucky enough to have to opportunity to play with/on a dyno (as I was building/calibrating the hardware/software for the dyno itself). Also for such a simple to set up carb it also ceases to amaze me how many get its super super wrong and thus run like dogs! Thirsty dogs!! But yes I have seen a few other dyno results for zuks with the same set up, they aint that far off! Also btw how close do you think the stock power output figure is to the actual? Just remember many engine come out of the factory de-tuned and choked to the max for emissions and durability sakes.

Dan

Phil I'm not doubting your experience with sierras. But I have met Jrzook and to be honest he is probably the smartest technical mind I know. His comprehension of carbys and EFi/ electronics is way beyond me, and I'd wager you also. Not to mention he is currently working his was through his PHD. So when Dan says he achieved 48kw at the wheels on a dyno, you can be asured that the dyno was correct, cos Dan probably wrote the software

i am also keen to know why the 1.6 bottom end doesn't work with the gti head... no one seems keen to say WHY it doesn't. the gti boys seem to get good power, and i would have thought the extra 300cc would just make it that much better in the bush!

Which is why once i get my manifold done i will be asking Dan to come round and work on my mega squirt for the 50 . you can weld alloy cant you pete wonder how much i can get out of the factory 27 kw the 50 puts out lol

i am honestly interested... in saying that i watched a guy at the last dyno day hold the temp probe in his hand for a run and a bog stock vn 3.8ltr said it made 175kws atw