matt_lamb_160

Thanks mate. Now thinking of having a mild steel piece of pipe in between to position the wastegate to where I want it. Will try Nicore 55 rods to joint cast to mild and Weldalls (because we have them) for mild to s/steel.

Great work mate. Does the port work include opening the throats, I assume it does otherwise the low lift improvements are surprising.

I had convinced myself that when using a cam with 0.45" lift port work other than in the bowl area would be pointless as the heads would not be port limited at that point (they would be valve limited).

An even more progressive test which showed the influence of valve guide shaping alone would be interesting.

Yep, it was much less than that when offered to me.

No doubt it would "work" as the top of the collector is open, but I could see that it was less than ideal and was after ideas on how to fix it which I have received.

The cast welding is not a major issue, I can use cast steam pipe and Ni rods (pre-heat does not need to be super hot), but then welding my s/steel v-band flange to cast I am not sure? Some have suggested "buttering" the cast with Ni and then welding the s/steel to the Ni???

A good manifold that already had a v-band flange to suit a 44mm Tial wasgate would be nice  .

Yes Wes has given good advice, but I think you should have a look at some of the work done by the guy suggesting the turbine housing option before yoy call him a liar. I am confident he has done it before. I think his advice is also good. The cracking issues were pointed out by Wes.

Thanks for your input.

The odd one looks like a milled C2 to me.

Thanks ando.

If your disks are rattling you may want to check your wheel bearings.

Pictures would be good.

What Ando has said sounds right to me.

I have C2 heads at 42cc, C1 heads at 49-50, E1 at 57cc and E2 at 50cc. These numbers may not be exact, but E1 and E2 heads I am sure are very different.

E2 is still pretty high comp ~50cc. It is similar to C1. E1 heads are low comp ~57cc.

Correct me if I am wrong, but I am reasonably confident.

Thanks everbody for your input, I think there have been some good ideas put forward. I think the wastegate off the turbine housing is something good for me to consider no matter what manifold I use (assuming it doesn't already have a well positioned wastegate outlet), especially any manifold designed for internal gate turbos.

If there are anymore ideas on wastegate positioning, don't really even need to relate to this manifold, I would like to hear them.

You can always block off that wastegate and just run a pipe/wastegate off the turbine housing. Will control boost better then off the manifold.

Sorry, missed this the first time, you mean kind of like on this housing:

http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-HSG-043&Category_Code=HSG

The manifold is not divided all the way to the flange, the second photo is bit deceiving. It is just a short 'merge collector'.

Do you have much turbo to bonnet clearance?

This will,work better

http://www.ebay.com.au/itm/TOG-T3-CAST-IRON-38MM-WASTEGATE-FLANGE-MANIFOLD-TURBO-TURBOCHARGER-ADAPTOR-/190807324615?pt=AU_Car_Parts_Accessories&hash=item2c6d00b7c7&_uhb=1

That is a good idea but it is low mount and I think I would run out of clearance on the shock tower.

Thanks Wes, that's pretty much exactly what I thought, another outlet in the same spot but on the opposite side and join them together before the gate. I can get a manifold like it pretty cheap, trying to decide if it is worth it.

What do you think of the wastegate positioning on this manifold?

How do you think it could be do better on THIS manifold?

Will do. Thanks mate.

Yep. Did you think you could hide forever?

I think low tens would be pretty safe assuming you are using petrol. But mid to high 9s would be fine.

The cam will pull from 2200rpm up to 5,000ish I think, but lift is low for duration.

It probably will not be an issue. It is not hooked up yet.

One per converter. The line is split in the engine bay for two converters and each converter has its own lockoff.

Somehow I have forgotten about this thread. I was asking for my turbo'ed 250. I am now running 3/8 flex line (one) and two electric lockoffs in the enginebay. The fitting in the tank has a ~5/16" minor diameter (much bigger than any lockoff), but I do not know if there is any internal restriction behind that.

I am looking for 200-230rwkw, no more.

That is what I am setup to do atm and I think you are probably right.

I should also clarify my last message. I do not mean I am trying to run more boost than the wastegate spring allows. I am trying to reduce partial opening of the wastegate before getting to max boost. Not sure if my message was clear (still not, haha)

Thanks. PSI, I am thinking of doing my own, but would like to know what is out there first.

I understand what you are saying Wes. I am not looking to switch between boost settings, I am looking to delay wastegate opening. I have a gated manual boost controller, but I wanted to know what digital options I had.