engine mods---gt2

[skattrd]

How about sticking a dx head on the block?
I swapped the std carb head (GU) on my jetta for an injection one (pb) as not only does it have the better cam but the exhaust valves are a couple of mm bigger.
Not sure if theres differences between the valves on dx/ex engines ... can anyone confirm valve sizes on these heads?

K&N doesn't make any difference imo and if you use a pancake on the Weber then its pulling in warm air instead of cold.
A bit of diy porting and "shaving the hedgehog" is a free way of improving airflow from the carb, which might help a bit.

[GTXTRA]

So just to clarify, a cam is what? How much would one cost roughly and how long to fit one? Sorry if I should know this but I don't.

its the camshaft.

you can get uprated ones from piper, schrick, kent amongst others. as mentioned a standard gti camshaft will fit a carburettor car without a problem.

[Junglist]

And is this a part I'll find on my spare '89 scala i engine? And are there any others I can transfer for easy power increase?

[The Autoad]

Not sure if theres differences between the valves on dx/ex engines ... can anyone confirm valve sizes on these heads?

K&N doesn't make any difference imo and if you use a pancake on the Weber then its pulling in warm air instead of cold.
A bit of diy porting and "shaving the hedgehog" is a free way of improving airflow from the carb, which might help a bit.

DX has 2mm larger exhaust valaves than the EX.

Avoid the pancake filter at all costs as Chris says, it will just pull in hot air and looks like you used to own a Corsa.

And is this a part I'll find on my spare '89 scala i engine? And are there any others I can transfer for easy power increase?

Swapping your complete spare i head will see a little increase in power. Remember to plug the injector holes and only run it with a weber carb. If you run with the 2E2 still on the head will fill with water as it needs the water feed for the auto choke warm up. Plug the water feed to the inlet manifold if doing this conversion.

Any other? as in engines? Depends on your budget and capacity to hold the turtle in.

[johnnyfication]

[quote="The Autoad
Avoid the pancake filter at all costs as Chris says, it will just pull in cold air and looks like you used to own a Corsa.
[/quote]

Just to clarify, the pancake will pull in hot air not cold as Ant has said, although that was what he probebly meant.......... ;)

[GTXTRA]

[quote="The Autoad
Avoid the pancake filter at all costs as Chris says, it will just pull in cold air and looks like you used to own a Corsa.

Just to clarify, the pancake will pull in hot air not cold as Ant has said, although that was what he probebly meant.......... ;)[/quote]

Ahhhhh. wondered when you'd pop up Johnno!

[Junglist]

And is this a part I'll find on my spare '89 scala i engine? And are there any others I can transfer for easy power increase?

Swapping your complete spare i head will see a little increase in power. Remember to plug the injector holes and only run it with a weber carb. If you run with the 2E2 still on the head will fill with water as it needs the water feed for the auto choke warm up. Plug the water feed to the inlet manifold if doing this conversion.

Any other? as in engines? Depends on your budget and capacity to hold the turtle in.

Any other? as in parts off the scala i

[The Autoad]

Any other? as in parts off the scala i

nothing else of note that will add extra guts to a carb engine. But water pumps, hoses, oil/water cooler etc are the same and can be used for spares.

[the edmundator]

So just to clarify, a cam is what? How much would one cost roughly and how long to fit one? Sorry if I should know this but I don't.

Dude, you might find this helpful: http://www.howstuffworks.com/engine.htm

[Rocco Ben]

how much power increase we talking for upgrading to a GTI camshaft?

[Risocco]

how much power increase we talking for upgrading to a GTI camshaft?

5 (ish) BHP dude. Best to describe it as the car pulls as well with a passanger with the injection cam, then it did on the original cam when you were driving alone, if you follow...

Alex

[MikeH]

The camshaft looks like a lumpy stick, and it controls how high the valves lift, and how long they're open for, so it's a big factor in how much power the engine makes. The trade off is generally between power and economy. Also, low end driveability can be affected.

If you want to learn a bit more about your car, start by buying a book or two on the subject. Tim Stiles Golf GTI Performance Manual is a good place to start, as well as a haynes manual.

[Mr Funk]

If you want to learn a bit more about your car, start by buying a book or two on the subject. Tim Stiles Golf GTI Performance Manual is a good place to start, as well as a haynes manual.

Adding on from this I got myself a copy of Lindsay porter colour manuals and it's bloody good. Like a How To Play With Cars For Dummies.

[YEAH]

quick cam related question, will a mk3 golf gti 8v 2.0 cam fit and work on either a dx or ex head?

[graeme]

well last weekend i slapped a golf gti bottom end on it (had been bored out, new pistons etc) got my weber on way, lookin out for a k-jet cam and just spent 200quid on serviceing parts so should make a nice difference...only thing i dont like about engine mods is that from the outside you cant see that i've done anything apart from lower it