MyE28.com

Dan, a friend I've not seen in a while built up Miata (2nd generation) with a JacksonRacing Supercharger. He heard via the grapevine that the S2 had some snort and wanted to race, something I'm not real interested in.

In the course of our conversation he tells me he's putting out 300+ hp. No dyno proof whatsoever but he's adamant about it since the boys at Jackson told him so.

I did a little research and can't find anything that's published that puts a blown Miata at anyting over about 180. Does anyone have knowlege on this? Power to weight isn't bad since the car doesn't weight that much but 300? Get the F out!

Ego and rice. Hmmmmm

http://www.jacksonracing.com/Shop/ViewP ... exID=38403

Dyno sheets listed for each application. He is talking smack! Try ~150rwhp! You'll kill him!

Todd

[Edit by TCD on [TIME]1122648020[/TIME]]

flyinmiata.com lists one of their SC's as putting out 225rwhp. That's not bad.

Maybe he has a big bottle of Nawwsss in the trunk.

Back when I had a Miata, Flying Miata had turbo kits with big HP, and a guy I knew and saw at BMWCCA driver's schools here at NHIS had a 1.6 with almost 300hp. It ran like mad on the track. No way you're even close to that with a JR supercharger.

[QUOTE="Dana R"]Back when I had a Miata, Flying Miata had turbo kits with big HP, and a guy I knew and saw at BMWCCA driver's schools here at NHIS had a 1.6 with almost 300hp. It ran like mad on the track. No way you're even close to that with a JR supercharger.[/QUOTE]

Miata's require built everything to run beyond 8/9psi. Rods break at 10psi. Trannies and diffs are tiny and weak.
Todd

[QUOTE="Dana R"]Back when I had a Miata, Flying Miata had turbo kits with big HP, and a guy I knew and saw at BMWCCA driver's schools here at NHIS had a 1.6 with almost 300hp. It ran like mad on the track. No way you're even close to that with a JR supercharger.[/QUOTE]

[QUOTE="TCD"]Miata's require built everything to run beyond 8/9psi. Rods break at 10psi. Trannies and diffs are tiny and weak.
Todd[/QUOTE]

What kind of boost do the MazdaSpeed Miatas run stock? I saw a guy at a local shop and was talking to him about turbo stuff. I could've sworn he said he had tweaked it out to 15-18psi. He didn't make any power claims, but he said it moved quite nicely and I have no reason to doubt it.

Jeremy

Miata's require built everything to run beyond 8/9psi. Rods break at 10psi. Trannies and diffs are tiny and weak.
Todd

THe entire car is a go-kart. My friend Ronnie had a turbo miata. At 16psi he literally melted a piston.

The guy I saw was running 15psi on his Miata, and I saw this guy for three driving schools over 2+ seasons, and he had no internal problems with his motor.

The 1.6 Miata used the same block and pistons as the 323gtx from 1988, as I recall. It's very overbuilt for a stock motor, and can run relatively high boost. Miata.net should have a wealth of information.

[QUOTE="Dana R"]The guy I saw was running 15psi on his Miata, and I saw this guy for three driving schools over 2+ seasons, and he had no internal problems with his motor.

The 1.6 Miata used the same block and pistons as the 323gtx from 1988, as I recall. It's very overbuilt for a stock motor, and can run relatively high boost. Miata.net should have a wealth of information.[/QUOTE]

The compression ratio of the 1.6 is 9.4 to 1 so that guy was not running 15psi without mods.
Todd

[QUOTE="Dana R"]The 1.6 Miata used the same block and pistons as the 323gtx from 1988, as I recall. It's very overbuilt for a stock motor, and can run relatively high boost. Miata.net should have a wealth of information.[/QUOTE]
IIRC, that "overbuilt" 1.6 engine had a problem with the crank snouts snapping off. ~0

I guess I am wrong. I had a friend at the house today who used to boost 15psi on his stock 1.6 withour any engine problems. Trannies and diffs broke but not the engine.
Todd

[QUOTE="Dana R"]The 1.6 Miata used the same block and pistons as the 323gtx from 1988, as I recall. It's very overbuilt for a stock motor, and can run relatively high boost. Miata.net should have a wealth of information.[/QUOTE]

[QUOTE="Shawn D."]IIRC, that "overbuilt" 1.6 engine had a problem with the crank snouts snapping off. ~0 [/QUOTE]

The bad shortnose crankshafts were only on the 1990 and very early 1991 models, and they were a big problem when mechanics loosened the crank nut during timing belt changes and didn't torque them perfectly. The later cars had no problems.