Engine Build

[mseal]

Okay guys and gals. It's time to rebuild the 1.8 in the miata. Going for the most bang for the buck for CSP. I've gotta have a bit more HP to keep up with Justin. I'm looking for ideas that will/may/are proven to work without facing catastrophic failure at midseason. My engine guy seems to know his stuff and has been studying the rulebook and at times he's speaking greek to me about some of the ideas he has. There is always the budget to consider. Haven't decided on a number yet, but there has to be a point of little gain for a lot more money. Any and all suggestions/ideas will be appreciated.

Mick

[00GTJustin]

My main suggestion is to get a new head. The 1994ish head makes much less power from what I've seen. I went down to race my friend Kevin this past weekend. I lost to his 2001 powered car by 1.5 seconds, and he said he was down 15+ horsepower in the midrange because his VVT controller was broken... His peak horsepower is still roughly the same (HIGH!) but I saw dyno charts with and without the VVT and they are vastly different curves.

You could just straight up buy a 2001 motor and spend the rest on a hydra nemesis or such to be able to run it. (This would probably cost...$3k or so..)

OR... try to find a '99 head, port match it to the intake/exhaust (apparently the exhaust has HUGE room to play, and the ports aren't even centered on the exhaust manifold. If you go that route, you could consider making a cheap offer on these: http://sccaforums.com/forums/1/389964/S ... spx#389964 and build a "top-end" bottom end under it.



As far as little things inside the motor. That's beyond my scope yet. :/

[CabotTeg118]

http://www.flyinmiata.com/V8/index.php?

[DLingenfelter]

http://www.flyinmiata.com/V8/index.php?

Might not be CSP legal but you would be my hero.

I say scour craigslist over the winter here and look for the same setup justin was discussing with an 01 model engine. Amazing deals pop up on the list! Go the megasquirt route, throw on the headers, and a crank pulley.
Internals kinda worry me, always seems like when people go through that much trouble that they're always having to fiddle with and tune them.

[00GTJustin]

Megasquirt won't control the VVT. There is one controller in existence so far, and it was designed ground-up by its owner.

[fspmx6]

i believe that aluminum flywheels are legal in SP. they dont "add power" but they do help significantly in reducing rotational mass, as well as mass in general. the 8 lb fidanza unit i put in the mx6 made a huge difference from the 40 lb paperweight currently sitting in the shed. there is always Colin Chapman's method to going fast " add lightness" how much weight is there left to be shaved? its a drop top, who needs air conditioning ( compressor, condenser, lines, ect. )? steel fenders are heavy. plenty of good carbon fiber/ fiberglass seats that are much lighter. steel hoods/deck lids are heavy. what exhaust manifold are you using, the heavy stocker or a lighter header( good for a few hp to boot). do you really need to have glass in the doors if the top is down ( a bit extreme, but its good for at least 20 lbs with the glass and mechanical units, more if they're power ) stock battery, or a motorcycle batt. ?

[00GTJustin]

95% of what you just said is not legal for *SP.

[fspmx6]

doh... i wasnt having a good day yesterday apparently. missed completely where the 2010 schedule was posted and here went off on a rant that was completely useless