Brad-ManQ45

zuhow: It appears that you think I'm being a DICK for having to point out TWICE that you failed to provide needed information. I think you'd better look at yourself in the mirror wearing your big boy pants.

Getting enough info is like pulling teeth for some reason...

You ask a question without telling us what equipment you are running and expect an answer?

Hi folks; Looking for high back bucket seats for my 280ZX. Thanks...

Then you should be golden...

You may not GET to 6k with any power...

Top end will be choked off a bit. Your power will be in the low to midrange rpms.

It'll be choked off a bit and start to spool around 2800 with full spool around 3200(estimated). Stage III turbine is like a 68 mm inducer and 62.35 mm exducer. The compressor wheel you are describing is awfully close to the 50 trim T04E and is a good match for the engine if not turning over 6k.

I don't think you have your trim specs right. Trims are usually whole numbers. The 74.2 just so happens to be the measure of one particular turbo e wheel's inducer diameter - and it is for a GT3076 turbo. A 50 trim compressor section is one of the just right compressors for our size engines in the normal journal T3/T4 series turbos. If you want lower spool the the T350 turbine (stage III) would be perfect. If you want more top end power then go with a stage V turbine.

That looks like a stage 3 turbine which is good for street. You need a .63 A/R turbine housing - your spool will be somewhere around 3100 rpm.

If you were running stock boost before this turbo change then you have turbo injectors because you'd have leaned out with NA injectors. When was the last time your injectors were cleaned? Have you checked each for proper function?

Ok, so stock turbo injectors. If you haven't raised the boost to much more than 10 psi you're ok with the stock injectors. The wideband sensor and controller need to be tested.

You failed to specify what engine the stock injectors are for. If for an NA engine then yes, you need bigger injectors. If for a turbo engine then that isn't your problem. Have you gotten an msq from someone with a basic turbo setup and tried it?

Can't put liners in and have them supported at the base...

If it will work with solid lifters then it looks to be pretty close to the "C" cam and would work well... Not so sure it would work with the hydro lifters - that lift figure is a big bump and not much more duration to tame it...