185kw turbo built na6 engine -what do I need?

[speed]

Hi all,
So I've decide to go turbo and have the following.
Begi exhaust manifold.
T28 turbo.
Sump with oil return.
Water and oil lines.
Eagle H beam forged rods. (Came with forged pistons but 2 are scored)
Dump pipe.
Rx8 injectors.
Toyota COPS.
Nitrodann coolant reroute.
MS2.
Yet to source a tube and fin cooler and make my own alloy piping.

Apparently I'd need to run 16psi at 6,000rpm to get 185kw atw.

Will be paying to have the head and block machined and head assembled with new valve stem seals etc.
Crank will also be machined.

Questions below:
1.Before I do this, should I be going for an increase in piston size and what compression are people running?
The forged pistons are 8.5 but should I go higher or lower. Some people have said that even stock 9.5 pistons would be adequate but I'm not so sure and don't want to skimp on the bottom end.

2. What bearings should I use?

3. Do I need to remove a lug to run water cooling for the turbo?

4. Would regular rebuild gaskets suit or do I need something special?

5. Including injectors; how much would an e85 set up cost me (parts)?
I.thought I'd be able to achieve my goal on 98 but would be good to know.

What have I missed?


Thank you very much,
Steve

[1green5]

What have I missed?

Cost of repairing/upgrading gearbox, differential and associated components.

[Okibi]

5. an off the shelf solution https://www.flyinmiata.com/fm-nb-big-flex-fuel-kit.html

[ManiacLachy]

Clutch upgrade? Or are you already running something stronger than stock?

[lightyear]

You could just install a V6. 185kw's and no turbo.

[NitroDann]

Hi all,
So I've decide to go turbo and have the following.
Begi exhaust manifold.
T28 turbo.
Sump with oil return.
Water and oil lines.
Eagle H beam forged rods. (Came with forged pistons but 2 are scored)
Dump pipe.
Rx8 injectors.
Toyota COPS.
Nitrodann coolant reroute.
MS2.
Yet to source a tube and fin cooler and make my own alloy piping.

Apparently I'd need to run 16psi at 6,000rpm to get 185kw atw.

Will be paying to have the head and block machined and head assembled with new valve stem seals etc.
Crank will also be machined.

Questions below:
1.Before I do this, should I be going for an increase in piston size and what compression are people running?
The forged pistons are 8.5 but should I go higher or lower. Some people have said that even stock 9.5 pistons would be adequate but I'm not so sure and don't want to skimp on the bottom end.

Stock to 9 ish on 98, stock pistons and rings are fine if healthy.

2. What bearings should I use?

OEM is fine.

3. Do I need to remove a lug to run water cooling for the turbo?

Forget the water cooling. But if you absolutely feel the need check the miataturbo wiki

4. Would regular rebuild gaskets suit or do I need something special?

OEM

5. Including injectors; how much would an e85 set up cost me (parts)?
I.thought I'd be able to achieve my goal on 98 but would be good to know.

You can easily, if you want to.run united every day just fit a walbro 255 intank for 170 and id725 for 800

What have I missed?


Thank you very much,
Steve

[speed]

5. an off the shelf solution https://www.flyinmiata.com/fm-nb-big-flex-fuel-kit.html

Will check that out right now. Thankyou!

You could just install a V6. 185kw's and no turbo.

Really want an engineered turbo 4.

Clutch upgrade? Or are you already running something stronger than stock?

Already have an upgraded clutch

What have I missed?

Cost of repairing/upgrading gearbox, differential and associated components.

Already have a 4.1 torsen. The gearbox is a weak link but I'm a very simpathetic driver.

Is the engine stuff that I want to sort out before I arrange machining.

[chrons_rotary]

Bigger brakes, NA8/NB8A minimum.

Also +1 for the V6.

[speed]

Bigger brakes, NA8/NB8A minimum.

Also +1 for the V6.

Got those too. Really want engine specs, namely pistons and water line bung.

[NitroDann]

I posted answers to both.

Leave the pistons stock.

Dont run water. If you have to run water the info with pics is in the miata turbo wiki.

[chrons_rotary]

http://miataturbo.wikidot.com/water-lines

[speed]

http://miataturbo.wikidot.com/water-lines

Thanks Ken

[speed]

Questions below:
1.Before I do this, should I be going for an increase in piston size and what compression are people running?
The forged pistons are 8.5 but should I go higher or lower. Some people have said that even stock 9.5 pistons would be adequate but I'm not so sure and don't want to skimp on the bottom end.

Stock to 9 ish on 98, stock pistons and rings are fine if healthy.

Sorry Dann, I must have missed this post. Really appreciate your responses.

By 9ish, do you mean 9.0:1 and can I get away with a thick head gasket?

If so any idea how thick?

Also would stock pistons handle 16-20psi if tuned correctly?

Thanks again,
Steve

[NitroDann]

Stock pistons will go deep into the 300whps

9:1 is fine, Id say just use your original ones and rering if necessary.

Dann

[speed]

Stock pistons will go deep into the 300whps

9:1 is fine, Id say just use your original ones and rering if necessary.

Dann

Ok great. Thank you very much.