PDA

View Full Version : How much boost?


cbaylis77
02-21-2012, 04:52 PM
Just found out my turbo car came with a blown motor :( so I'm starting fresh. How much boost can a stock bottom end take?
RyanxStorey
02-21-2012, 05:17 PM
I've read 250 rwhp but seen others post 250 wheel torque.
concealer404
02-21-2012, 05:29 PM
250wtq is the "accepted" number.
adamvanxxx
02-21-2012, 06:50 PM
All of it
phillyb
02-21-2012, 06:51 PM
All of it

came in here to post this
concealer404
02-21-2012, 06:55 PM
That's usually what i answer when someone asks me how much i run... but my brain hurts so i didn't post it.

Can i still get partial credit?
cbaylis77
02-22-2012, 10:06 AM
Thanks guys. I've heard 250 as well. It did 280 at 16lbs before it came apart. My goal is 300 and I have better rods and pistons for it. Just hoping the crank holds up!
concealer404
02-22-2012, 10:44 AM
The crank will be fine to 500whp+
adamvanxxx
02-22-2012, 11:08 AM
Yea I have never heard of a crank OR block failing.

It is just the pistons and rods. It was probably just your tune, plenty people are chillen in that range on stock internals.

If you haven't already, http://miataturbo.net
cjsafski
02-22-2012, 01:13 PM
All of it


Damnit I got beat to it too.

What turbo and what are you using for fuel management? There may be some underlying flaw with the setup.
cbaylis77
02-22-2012, 11:12 PM
It's a Turbonetics 60 series and Hydra 2.5 EMS. It has RX-7 injectors (460 I think) so they I will need to be upgraded. I think it was a poor engine rebuild by the previous owner. I'm owner number four so there are alot of questions I'm sorting out. The Hydra 2.7 would be nice too but one thing at a time.
concealer404
02-23-2012, 09:45 AM
Are you tuning it yourself or do you have a tuner in the area familiar with Hydra? If you answered "No" to both of those questions, get rid of Hydra.
adamvanxxx
02-23-2012, 10:26 AM
Hydra seems to suck....


At least I understand MS
cbaylis77
02-23-2012, 11:08 AM
Never used Hydra or Mega Squirt myself so I'm not familiar with either yet. I do have a local tuning shop to work on it after I get it running again. The guys at Flyin' Miata have also been a big help so far.
concealer404
02-23-2012, 11:12 AM
Never used Hydra or Mega Squirt myself so I'm not familiar with either yet. I do have a local tuning shop to work on it after I get it running again. The guys at Flyin' Miata have also been a big help so far.

Has the local shop spent some time with Hydra before?
cbaylis77
02-23-2012, 12:19 PM
Yeah they're one of the only 4-wheel dynos in the area so they do alot of crazy tuning.