Hks Low Mount Cast Manifold

[tridentt150v]

If you have a Hks cast low mount manifold I want to know what wastegate you are using and how did you mount it?

I was thinking of going with the Hks std 40mm, but they want +$700 for a new one [and $400 for a questionable quality s/h one] and a tial/turbosmart costs $400.

But other wastegates don't mount up like the Hks one would. I was thinking of chopping up a bit of 10-13mm plate for the manifold and then centreing a 40mm hole and tapping thread into mounting holes either side, but I'm not sure of airflow to and through the wastegate. It would be cheaper [bit of frigging around for me, but I work cheap on my car], but it could impact on performance?

Has anyone else done anything similar?

Another solution is the plethoria of chinese? copies of the hks unit that are on ebay and/or Just Jap/option1garage/driftbits etc etc - I think I will stay away - but has anybody had any experience with them? Usually dubbed the Hks style!

[Adriano]

Have used the hks ebay cheapiec without any drama for over a year on a mates car, ive got an hks on on my cast lowmount gtr manifold, and the wastegate is the same as the cheapies, but there is a cast "adapter" piece between the two.This piece mounts the gate on an angle. Should be able to make one with two flanges and a bit of steam pipe bend.

[tridentt150v]

Adriano, why does it have to be at an angle, is this to clear the twin turbo set up of a GTR?

I thought [probably wrongly] that with the adaptor plate supplied with the Hks/JJR type unit that it would bolt straight on [for a single turbo gtst]. Interesting. I will have scour the web for some pics of the adaptor etc.

Anyone using something other than a Hks or Hks style?

[BHDave]

The RB20/25 style ones bolt straight up to the manifold with the 5mm spacer/piston seat in between.

I'll get a pic for you later on of mine when i get home from work.

Sorry, the heat shield makes it a bit difficult to make out.

As you can see though, there's a heap of space if you do decide to make an adapter to fit another type of gate.

If you raise it though it would be worth angling the gate towards the back of the car to make it easier to get a pipe off it

Edited February 24, 2007 by BHDave

[discopotato03]

Thanks Dave , any pics welcome . Is that heat shield material easy to get and effective ?

Cheers Adrian .

[tridentt150v]

Thanks BHDave, you know, I've cruised the net ad nausem looking for a Hks std 40mm unit, but they are hard to come by and when you do, very expensive [compared to other makes]. They have the reputation of being an excellent product, but so do Tial and Turbosmart etc. So I'm just assessing my options and checking how far my project $$$ will stretch.

Thanks for the pics as well, very helpful.

[BHDave]

Thanks Dave , any pics welcome . Is that heat shield material easy to get and effective ?

Cheers Adrian .

I picked it up at supercheap one day when i was wandering around the isles trying to remember what i went there to get.

It's acl race, GTRxxx part number. It's actually in a head gasket packet. It seems to do the job, It's noticably cooler under the bonnet when lifting the hood after a drive. The exhaust pipes were wrapped at the same time though.

And none of the rubber hoses have melted yet

[Wheezy]

Im going a Tial 38mm Gate.

I figure make up a flange for the HKS side of things then roughly a 2" dia pipe to a flange for the tial gate should do the trick, it will still be mega close to the collector compared to other manifolds and then I can mount the wastegate where I want cous I can bend up the pipe however I want it. I will probably use stainless also as my exhaust will be stainless also, so why not keep the theme.

-Jez

[ECR033]

I'm using a Turbonetics 40mm on a HKS low-mount manifold (see below)...

[tridentt150v]

I'm using a Turbonetics 40mm on a HKS low-mount manifold

So you made up an adaptor?

[Wheezy]

looks like he made up a flange with a small piece of pipe and the a flange for the gate

Edited February 24, 2007 by Wheezy

[holes]

Hey mate i mounted up a 44mm Tial gate pretty easy hour or so on the tig made up a flange with a short bit of pipe to the v band clamp just gotta be careful of the height cos theres not much room in there, also got one of those hks gates in the back room only problem is the diaphram is shagged if ya can source a new diaphram ill let it go fairly cheap its got a dump pipe and all the flanges

Cheers Andrew

[ECR033]

So you made up an adaptor?

Not me personally, but yes the guy I purchased it off had a simple adaptor plate fabricated for it.

[discopotato03]

ECRO33 that one looks so inoffensive , could nearly get away with telling the cops its an EGR valve !

Cheers A .

[ECR033]

ECRO33 that one looks so inoffensive , could nearly get away with telling the cops its an EGR valve !

Cheers A .

Almost - most people don't even notice it