My D16A8 turbo build 1988 ED9 CRX restoration

First possible build being considered.


D18 based on the D16A8 DOHC.
Sleeved to 78mm bore with forged pistons to give 9:1 CR, probably SRP if available or Arias or Wiseco.
D17 crank with turned down snout to D16 size. Same deal as sqlcivic
Custom rods about 150mm long, 7/16 ARP2000 bolts.
About 12mm deck plate with sleeves through deck plate to create tall deck block for decent rod angle. Final dimension to be determined after trial fit with H22 belt
B20 valves and head de-shrouded to 78mm bore.
After market springs. Seat pressure yet to be decided.
Full port and polish.
Head milled to give a good flat quench surface.
Stock D16A8 cams.
Adjustable cam gears to optimise stock cams to turbo and correct for deck influence with H22 belt.

Dan and Beaver

That's what's going on in my mind.

The only real advantages of the 18 are drive-ability and of boost power, but it will cost about $1500 to $2000 more to build and will have stronger rods and pistons.

There is a lot more work involved, but I have access to a mill and lathe and guidance from a very good semi retired toolmaker. He is also helping me make a new crank for the 1912 Little Giant I am rebuilding.

In the end I will probably take the easy way for expedience so I can start driving it.

If I can obtain a second DOHC d-series core I might end up eventually doing both.

I will PM Jaker to see where he ran into problems

Update.

I have stripped out the RT4WD wagon and returned the leftovers to the guy I bought it from as agreed.

I may have an Eaton M90 just to see if it can be fitted any way any how. I think not, but they are dirt cheap here second hand, like maybe $100 to $200.

I am now fairly convinced for the tall deck D18.

I have since acquired.

Bosch 17014 wide band O2 sensor.
SLC Pure Plus digital display.
14point7 software.
Ostrich 2.0 emulator.
Xtreme Hulog data logger.
Moats Burn 2 chip burner.
DSM 450 blue top injectors.
Garrett GT2859R p/n707160-9 turbo.
Chinese external waste gate.
Clutchmaster aluminium flywheel (probably won't use it).