sailaholic wrote:Do a compression test.
Mx5s are far more likely to run rich then lean
The 7" Mazda diff from a 1.8 is the one you want forget a 9" on a car this small. The is no need and handling will go backwards unless your clever.
I'm waiting for my mate to borrow the compression test kit from his work. I'll post results once I get it!
Thanks! I'm really unsure on what diff to use. The ford 9" is so popular i figured it'd just be the way to go. I know there would be a bit of modification to make it fit (custom prop shaft, cvs, diff well) but i figured it would be the best to hold the power. I wonder if the viscous LSD in the 200sx would fix?

Also, just got off the phone with my engineer. He's keen to try work through an action plan to get the car engineered with the SR20 and all associated work

I have a lot of research to do, though. It's just annoying that a lot of the results are american and that they're all saying to go LSx

The leaning out I'm curious about. A friend of mine started going crazy that it could be the fuel pump, that the injectors have crapped it, etc. and I just think ".... it's a 20 year old fuel filter..."
So we'll see what we come up with. Any suggestions?
TTT wrote:lol... you've come from a 200sx to an mx5..
that "revs out but no pull" is how they are..
you say there is alot of work to do, but not really..
I bought a complete spare 1.6 engine for $400.. including clutch.
Gearboxes are even less.
That's what my friend said; going from a 2L turbo running 13.7 psi boost is a massive difference but I'm going by the feel of the car without biased. It goes alright at low RPM, then as you start to rev out it's just revving which to me indicated clutch, however it feels different to when my RB25DE skylines clutch went.
It also will not go past 110km/h at all what so ever. Which to me indicates a problem most likely fuel, AFR or clutch... I should be picking up a new clutch from MX5 mania tomorrow ($450!!!!

) so on Saturday we'll see if there's a drastic improvement.
The 1.6L needs a new head gasket which is slightly annoying; they're a bitch of a job. I honestly consider that "a lot of work" because i'm crazily not bothered to do it at all.
Clutch change is easy... head gasket... urgh -.-
Apart from mechanical, it requires a new front and rear bumper, rust repair above the windscreen, passenger side of windscreen and under the passengers feet somewhere (haven't bothered figuring out where yet).
Then I might as well respray it all because my friend has an air compressor and spray kit... and i get insanely bored most weekends.
If the SR20 idea falls through, you need to introduce me to your engine/gearbox hookup ;)