Bone stock 2000.

Hydra, 2560, 7200RPM

 

240 hp @ hubs, Greddy'd 1.6

 

'92 motor... taken from a granny-driven 258k mile car... stock internals.
SR20det T25
Megaquirt (standalone by Brain)

Last dyno made 200whp/185ftlbs.

Since then, I've swapped to COPS and added 6* of timing across the board. Feels a bit faster now and only running 12psi daily. Butt dyno says I'm making 200whp@12psi.

Problem is my T25 spikes to around 14.5psi and settles to about 12psi at redline. I've bumped up the EBC a lot and it just won't hold the boost up high. Could be a wastegate or flow issue... but if the damn thing would hold 14psi to redline, it's make 220whp or so. My 2.25" Borlas don't help.

Every day this motor continues to run is a blessing from the Boost God.

Attached is my last run... actually hit 202whp on the previous run, but this one had the final "tune" on it. Bumpy AFR in the midrange was a product of a poorly tuned Accel Enrichment table... current datalogs show board-straight AFR's through there.

 

Me....about the # same as Sam using a hybrid Greddy kit.

 

271 @ the wheels ... but it lasted only about 4 years lol


stock 1.6L
BEGI cast manifold
Ford SVO T3
3" DP / full exhaust
Custom IC
Tec II
RC 500's
Vishnu Rail


Here comes the new rods/pistons

 

Looking at this poll, over 51% of us here are wimps...no wonder they think we is gayz!!!

 

Were you running meth? Was that the stock throttle body and intake manifold? Did your rings eventually go bad?

 

No Meth! Stock T-Body and Intake for part of it and BEGI and 70mm for another part. Most was stock Intake! Rings never went bad, I sold the engine to a local guy running good!

 

Marc, was that dyno on pump gas? (110 from a pump doesn't count )

 

Sunoco 94

 

Awesome. That dyno makes me feel better about the BP internals

 

Marc,

It would be easy to extrapolate that you could hit 400rwhp with a NB 1.8 motor (given its far better head and cams) if you ran the same intake, turbo setup & boost and exhaust as your 1995 1.8. However, I don't know if the better flowing NB head will make up for the fact that the '00 motor has higher static compression than the NA motor (per Randy @ Solo Miata, '95 was 8.8 compression vs. 9.5 for '00) and is probably less tolerant of both boost and timing when you exceed 12 psi. If your engine management system can SAFELY log knock counts, you can do some optimization runs (third gear pulls on "safe" roads or 4th gear on a chassis dyno) to see if less boost (15psi with more timing) gives more usable street power than more boost (18psi with less timing).

Then again, it's relatively easy to run a 50/50 water/methanol system that will allow you to run 18-19psi of boost with "good" timing. It may be pain to keep re-filling the meth container but detonation (stock Miata ring lands and rods quickly expire when detonation occurs at high boost) won't be a problem and your street tires should enough of a "fuse" to protect the stock trans and rearend for normal street driving.

 

I'll post in a week or two when my car gets tuned with the AEM EMS. Hoping for 270-280whp on the stock motor.

 

Hey Ray,

Looking forward to seeing another strong 1.6 motor! Which TD04 variant are you running on your Greddy setup and with how much boost???

 

never dynoed mine, because i don't give a damn

 

I made 214HP @ 12 psi (well... spiked to 12 psi and settled at 10psi). That was with the god awful crush bent 2.25" exhaust. With the 3", new BEGi downpipe, dual feed fuel rail (yours), coolant re-route, and a few other tricks... I anticipate making 260 or so, but will detune it to slightly under 250 to protect the trans until I can get a 6 speed (it's my only car).

Once I get a 6 speed and build my spare block I plan to upgrade the compressor and see how much power I can make on the stock head/block before it pops.

 

The stock Greddy one, with a water/meth injection kit. Probably run 19-20psi, max effeciency on the 15G is 24, so should be fine.

 

Stock 94 1.8 block
151,000 original miles
51,000 boosted miles
Begi manifold/dp
GT2560R @ 15 psi's
Link ems

 

Well, got the car on the road and running WG 5.5psi with a safe tune right now.



A/F is hovering around 10.8-11:1. We'll get it closer to 11.5:1 when we hook up the boost controller and turn up the boost. I am still amazed that I got almost 190whp from 5.5psi, without even touching the cam gears. My tuner said we could probably play with the cam gear and get it up to 200whp. We'll worry about that when we get the boost turned up, which might happen tonight. :P

 

might as well update:

311hp/260ftlbs on stock 99 motor.