blinx... why is it so that a b18cR can;t use lighten crank pulley?
There have been long threads about this topic during the beginning fazes of the forum, it was concluded that the longer stroke of the b18c causes the engine to have slightly higher crank vibration/harmonics what ever you want to call it. End of the day it is believed that these increased harmonics of the longer stroke engines combined with the N1 pulley (which does not have the rubber isolator on it) can cause oil pump failure or premature bearing wear. The b18c pulley has the isolator on it, the OEM b16b one does also but the N1 does not. How true all this is, well its hard to say, but numerous people have reported oil pump failure shortly after using the N1 pulley on lsvtec and b18c engines.
If you must have a single pulley on a 1.8+ engine its better to get the b18c pulley and have the extra two pulleys machined off and have it professionally balanced. Hope this makes sense.
There have been long threads about this topic during the beginning fazes of the forum, it was concluded that the longer stroke of the b18c causes the engine to have slightly higher crank vibration/harmonics what ever you want to call it. End of the day it is believed that these increased harmonics of the longer stroke engines combined with the N1 pulley (which does not have the rubber isolator on it) can cause oil pump failure or premature bearing wear. The b18c pulley has the isolator on it, the OEM b16b one does also but the N1 does not. How true all this is, well its hard to say, but numerous people have reported oil pump failure shortly after using the N1 pulley on lsvtec and b18c engines.
If you must have a single pulley on a 1.8+ engine its better to get the b18c pulley and have the extra two pulleys machined off and have it professionally balanced. Hope this makes sense.
i used the N1 on 3 different setups and all 3 are still running without problems, i have never heard of issues with the N1, hell my friend has been running built ls turbo for almost 4 years with the n1 and has had no issues
I agree with Blinx all the way even to the point of suggesting a stock harmonic balancer being machined off and rebalanced like the one sold by INLINEFOUR.COM - Mon.~Sat. 9:30am~6:30pm PST - 11400 Knott Street, Garden Grove, CA 92841 here -----> click me.
Always with good info Blinx gotta hand it to ya man.
what about using lighten flywheel then? will the harmonics/vibration of the 18c be and issue here too?
Fully built/balanced/blue printed engines will be less likely to have problems, and just because a few people have success does not mean all do, remember i have been doing this Honda thing for 9 years now... You end up seeing a lot of things along the way and learn some trends. It seems hit or miss, i had one on my b16b but when i got a b16a block i used the OEM b16 pulley.
Thank you kind sir, i see you being helpful often also Many times i have not posted in a thread because i see you have it all sorted, thank you
i've been going at it for 7, but i agree with luck with somethings and no luck with others, my friends fully built single cam turbo ran for 5 years strait, and another friend had one that was fully built with a smaller turbo and it blew in less than 2 months
our H2 racecar uses the super damper from ATI
ATI - Super Dampers® for Honda Engines
ATI - Crankshaft Dampers 101
some more info:
ATI - Tuning the ATI Super Damper® for Maximum Performance
The stock pulley is pretty good, but over time, as others have mentioned, dry rotting can occur on the "rubber band" and this renders the damper ineffective to nearly useless. Face it, the youngest B-series VTEC is from 2001 and by my math, that's old enough to get a proper damper.
anyone know what torque the new one has to be installed to?