Garrett T25 A/R 0.42 - suitable or too small?

1 bar spring will be fine for what your doing. Try use the line that it comes with, restrictor will be sized for the turbo

Thanks Vern.

Can you remember the compressor inlet and out sizes? Are they both 2"?

Trying to order some silicone bits before the turbo arrives.

Not sure, can check, but from memory 2" sounds right. I had a mate spin up an aluminium spacer ring to make the inlet 2.5" so I didn't have to run a reducer elbow.
(Actually might have been a bigger diameter, will check and get back to you)

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Originally Posted by Vern

Not sure, can check, but from memory 2" sounds right. I had a mate spin up an aluminium spacer ring to make the inlet 2.5" so I didn't have to run a reducer elbow.
(Actually might have been a bigger diameter, will check and get back to you)

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Based on Kinugawa data for a replacement compressor housing, it looks like the inlet is 2.25" and the outlet 2" OD. You'd think they'd list these details in the turbo specs.

I've been running the same ebay plastic Donaldson air cleaner as you and I think I've worked out a way to make it work with the turbo. Its all starting to come together in my head at least. Lots of little packages are now ordered from all over the world which just need to arrive. The budget is shot already, was going to be $1500; will more than likely hit $2500. I think I spent $500 last night on silicone fittings, T2/T3 adaptor and EGT gauge/probe:eek: The $AUD is not helping either.

I'm going to have a crack at making my own dump pipe from a stainless donut; I want to wrap the dump in the vicinity of the alternator for heat protection, but google wisdom indicates that it can cause rusting of mild steel and possibly affect the metallurgy of stainless causing it to become brittle and crack. Ceramic coating is definitely out the budget.

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Originally Posted by mark2

I'm going to have a crack at making my own dump pipe from a stainless donut; I want to wrap the dump in the vicinity of the alternator for heat protection, but google wisdom indicates that it can cause rusting of mild steel and possibly affect the metallurgy of stainless causing it to become brittle and crack. Ceramic coating is definitely out the budget.

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If you are going to drive it reasonably regularly and will be rapping the pipe soon after fabrication it should be fine with the wrap. If you allow the wrap to get wet and sit around for months the pipe will rust, but if you are worried give it a squirt of high-temp paint first.

I'd go mild over stainless because stainless will crack if you wrap it or not.

Some form of heat shielding is important though... I'm on my 3rd alt and my 3rd starter! Even if your dump pipes rusts out ofter 5 years of being wrapped (it wont) it will be a darn side cheaper to replace than what is around it!