2.1, 2.2, 2.3, 2.4 motors / strokers
I really don't care about drag racing, but the issue is similar. For me, the RPM is critical because it determines how fast you can go in each gear. FWIW, I already feel the gear ratios are rather short for high hp cars and then if you reduce the safe RPM limit you have further hindered your setup (IMHO). I have already spoken to a bunch of folks that have high hp 2.3Ls and they all say the same thing - need taller gears....So if you can run a 2.3L to 8K and a LR2.4 to 9k (and have the right turbo), then the LR2.4 is the optimal choice as long as it holds up comparably to the 2.3L.
Gearing & final drive is probably a better solution for a high hp 2.3 or a LR 2.4L.
Last edited by 38six; Dec 19, 2010 at 05:50 PM.
it boggles my mind how in the past 6 months the "safe" rev limit for a 2.4L has kept going higher and higher for no reason at all. a "long rod" 2.4L still has a **** poor rod/stroke ratio. if this trend continues, 2.4's will be good for 10,000 rpm by summer.
Btw you & I seem to have simular builds going on. 2.2L w/ EFR BW 8374 ? 
Last edited by 38six; Dec 19, 2010 at 06:22 PM.
I know Dave B. says his 2.3s can go to 8.5K without issue and if so I can't understand why a 2.4L would be any better in real life (sorry I guess 0.1L is technically better).
Last edited by cij911; Dec 19, 2010 at 06:55 PM.
Custom 159mm Carillo H-Beams @ 575 grams good for 1000+hp and custom 10:1Wiseco 1400HD pistons with pin up 9mm = light weight and strong and who the F*** knows; it could be the next summer 10,000 rpm limit 2.4LR motor. 1.59 rod stroke ratio...not too shabby
Hmmm sorry if I am propagating bad information. I believe Aaron (ER) stated 9K was fine for a LR2.4L. I guess I'll have to do some math myself and figure out piston speed and revs...From your experience, what is the safe rev limit of a 2.4 and LR2.4 ?
I know Dave B. says his 2.3s can go to 8.5K without issue and if so I can't understand why a 2.4L would be any better in real life (sorry I guess 0.1L is technically better).
I know Dave B. says his 2.3s can go to 8.5K without issue and if so I can't understand why a 2.4L would be any better in real life (sorry I guess 0.1L is technically better).
on a 2.4 its 8,000 daily and 8,400 on kill.
on a 2.2 its 8,500 daily and 9,000 on kill.
on a 2.0/2.1 its 9,000 daily and 9,600 on kill.
http://www.csgnetwork.com/pistonspeedcalc.html
Last edited by n2oiroc; Dec 19, 2010 at 07:12 PM.
im not an expert, i just have my opinions and am following proven "reliable" piston speeds. will the motor break if you go past them? no, but engine life will suffer imo. im sticking to 28 mps on kill and 26.5 mps as a daily limit. some like higher, some like lower but this is where i feel comfortable.
on a 2.4 its 8,000 daily and 8,400 on kill.
on a 2.2 its 8,500 daily and 9,000 on kill.
on a 2.0/2.1 its 9,000 daily and 9,600 on kill.
http://www.csgnetwork.com/pistonspeedcalc.html
on a 2.4 its 8,000 daily and 8,400 on kill.
on a 2.2 its 8,500 daily and 9,000 on kill.
on a 2.0/2.1 its 9,000 daily and 9,600 on kill.
http://www.csgnetwork.com/pistonspeedcalc.html
yes but shorter deck height so rod/stroke ratio suffers. i also saw a post from david buschur about the 2.4 block being stronger. both have their strengths and weaknesses. either one will be fine though.
Oil squirters are not needed in any shape or forum. Stronger block thats pretty opinionated right there. the 4g64 is just as capable for sure. Better head sealing this i dont see where this came from i have not heard of any other 2.4 guys having leaking hgs. I have heard of them on every other motor using cometic hgs not apr headstuds etc. but again not saying it cant happen anything is possible
there you go