Redwood Chair
- Stock PSI Or Bust -
- Joined
- Mar 23, 2007
- Location
- Ocean Beach S.F.
Wren's in Athens, take it to him and he'll fix you up.
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Exhaust, Cam and twin 45's = enjoy
Not sure about the focus on revs. Any reason for wanting to rev it to the moon?
This would probably be the best head for a NA B23. 8000 rpms, 231 hp (69 hp more than B230FT). Who says NA can't make power?
By 1992-93 season the typical good 240 with 2300 engine was making between 230 to 235 hp..8 valves, 7100 rpm..
That is 25 years ago...
And the were NOT on 45s...that limits the fun to around 210 max
48 DCOEs or Del-snort-os
Mmm but how many torques?
By 1992-93 season the typical good 240 with 2300 engine was making between 230 to 235 hp..8 valves, 7100 rpm..
That is 25 years ago...
And the were NOT on 45s...that limits the fun to around 210 max
48 DCOEs or Del-snort-os
Stock original motor you will probably spin a rod bearing eventually.This all sounds like a beautiful song to my ears, but can a stock b23 shortblock withstand 7100rpm? Or it will fall apart after few hi rpm runs?
This all sounds like a beautiful song to my ears, but can a stock b23 shortblock withstand 7100rpm? Or it will fall apart after few hi rpm runs?
Stock original motor you will probably spin a rod bearing eventually.
The b230 with "big" rods spun to 8k on a regular basis and lived most of the time over 5k.
Probably 1000-1500 rally stage miles like that.
After 3 years of rally abuse, that 180k mile motor is now going into another rally car.
You can bounce one of the limiter at 6200 for 500k miles. You start pushing things past 7k rpm you should have everything balanced, blue printed and in tip top shape if you expect it to last for a long time. Stronger H-beams are pretty cheap and pistons aren't too bad if you want some extra insurance/less rotating mass.so, one can assume its safer stay around 6000-6200rpm with stock internals..
You can bounce one of the limiter at 6200 for 500k miles. You start pushing things past 7k rpm you should have everything balanced, blue printed and in tip top shape if you expect it to last for a long time. Stronger H-beams are pretty cheap and pistons aren't too bad if you want some extra insurance/less rotating mass.
They take high RPM use fairly well. The rods are strong but heavy as are the pistons. On a budget just getting the engine balanced and make sure bearing fits are spot on etc. Valve springs will need to be strong enough for the higher RPM's. Many B23's have been subjected to high RPM use and they normally survive very well. On a higher buget longer H beam rods and shorter pistions would be a good bet. For a B230 I would strongly suggest H beam rods
no matter how much i would like to rev it past 6000rpm..i cant, or at least i see no point as my engine gets out of puff around 5500rpm.. probably because of the D cam.
I found that even a k-cam will still make power up to 7k if it's retarded a few degrees.
Cheap lazy people would say that.This would probably be the best head for a NA B23. 8000 rpms, 231 hp (69 hp more than B230FT). Who says NA can't make power?