Well after a first year doing Solosprint (Canadian Time Trials stuff), I've gotten the bug an need more power. :lol: 191whp was fun for a while. I just dropped my shortblock off with Ocean @ Chikara along with my Supertech pistons, rods and will be working his Ocean magic doing the following. I would have loved to get some Mahle Maruha pistons, but the budget did not allow .
light deck
bore .040 over
balance crank
balance rotating assembly
assemble short block
remove oil injectors
Install Ocean's magicall oil pump good for high RPMs
All said and done the bottom end will be capable of 8000+ RPM. Static compression ratio will be around 9.5:1 - 9.6:1. All depending on how much material has to be taken off of the head.
I also dropped off my head there as well. Turns out it needs a bit of love but nothing that this guy can't fix. So I will be going with OS SS valves (the head is already heavily ported), 94-97 BP springs, new copper valve guides, new valve seals and assembly. It will also be getting a slight shave to clean up the mating surface and smoothing of the combustion chambers. I have yet to decide to stay with hydraulic lifters or go with the Mazdaspeed solid SUB lifters. The hydraulic lifters are only good for around 7500RPM, and the SUB can go well past 8000RPM and see gains with proper cams. That will be decided at a future date and I have to figure out if it's allowed for my racing class.
Now for a power adder for my dinky 1.6L 16v DOHC I will be getting one of these
With the higher comp engine and the C30-74 Rotrex charger the engine should be somewhere in the 280-300whp mark with a nice powerband thanks to this thing I just picked up from Levinubhin...
Honda Blox B16 manifold mated to a Miata B6 flange ... (and yes... it's port matched inside where the two parts are welded together)
This is the kind of powerband I am hoping for. This is with a C30-94 at a lower PSI, so the 74 will be run at a slightly higher PSI and should produce a bit more power under the curve.
This is going to be a long and slow winter build and I will update with photos and more information along the way
My car for refrence....
1990 White NA
180,000kms
Bilstien HD w/ sleeves and 550/350
RB hollow front bar, stock rear
15x7 +35 w/ A032R (for now)
Hard Dog Single Diag
Momo Acropolis Seat on custom rail mounted LOW
Maruha 2 way diff
Megasquirt MS1
Plans for the future include 6UL's, revalved shocks and R888's.
Me at Knox Mtn Hill Climb last year with the GReddy turbo kit (with a slipping clutch... see if you can hear it )
Tuning... power was fun, it had a bit of an exhaust leak and a cat which robbed some power, but at 10PSI I was happy. I WAS going to fix the leak and remove the cat and tune for 15PSI but my stock head started showing it's age with a lot of oil consumptions (valve seals) and lifter tick.... so what better than going all out!