external wategate

[AGO41T]

how do u weld or bolt one up to the stock manifold on a 1.8T?

wanna run a screamer on a 38mm gate with like 17psi spring so it opens up on high psi.

[twin eng, twin turbs]

Screamers are great fun!

I would recommend getting an aftermarket manifold or having a custom one made.

Although you can weld a flange to the original manifold it would more than likely crack around the weld because the factory manifold casting requires a welding proceedure with appropriate preheating and surface preperation.

Have you seen just how small the factory ports are in the manifold? They are tiny and restrict power but enable quick response and boost.

[AGO41T]

wot about the internal gate? simple weld closed?

der are manifolds on ebay but they dont look very tough..

[16v_kid]

I want a screamer on my 124 16v turbo...but ill be running around 25psi

[fuzion]

i see this car getting a yellow birdie very soon, maybe 3.

[Spyda]

i see this car getting a yellow birdie very soon, maybe 3.

3 x the fullysicness!

I love screamers, there was a F6 FPV at the "drags" that was leaving the road white from the flames, i was like what idiot puts a neon there till i realised it was the wastegate haha.

[twin eng, twin turbs]

wot about the internal gate? simple weld closed?

der are manifolds on ebay but they dont look very tough..

You could weld the internal gate closed but i really would not recommend doing it, once its welded up you have to live with the results. Which may be more boost than it is tuned for, boost spikes and damaging the turbine and compressor wheels.

Your right about ebay manifolds, most are manufactured from thin walled stainless steel and crack!

[Bubu]

wot about the internal gate? simple weld closed?

der are manifolds on ebay but they dont look very tough..

I believe internal gates' are usually closed. So you dont have to weld it shut, it will just stay shut if the actuator is not operating.

[AGO41T]

how to leave the actuator not working?

i mite buy a used manifold and use a ext gate and try it..

[twin eng, twin turbs]

If you disconnect the hose going to the wastegate actuator it will make a lot more boost. The hose sends boost pressure to the back of the actuator diaphram pushing the diaphram, rod and finally wastegate open. With the hose disconnected the wastegate will only open when the back pressure in the exhaust manifold is enough to push it open. This could happen at anything up 30psi even, but i wouldn't recommend trying to find what the maximum it makes is...