my friend had a 95 gsr.. with 144k miles on the motor.. orignial.. and he overrev it to 9 grand and a retainer cracked.. whats the number one reason for a retainer cracking.. i know its prolly because of overreving. but is it due to heat, and the force of the springs being pushed up and down?

everyone is saying he had valve float.. whats the easiest and understandable way or explain what is valve float and what causes it?

Fuel cutoff is at 8200 or so, what happend?

did he take the rev limiter off? i know i redline my to 8500 stock everything and it runs just fine but i do have a pritty much brand new head.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hbcrazy88 &raquo;</TD></TR><TR><TD CLASS="quote">did he take the rev limiter off? i know i redline my to 8500 stock everything and it runs just fine but i do have a pritty much brand new head.</TD></TR></TABLE>

What do you have done? Cuz mine goes to lik 8200 and shes done.

stock head but jsut rebuilt, no rev limiter and a walbro 255 internal/ inline fuel pump, with a aem cia and apexi n1 exhaust. thats really the only engine performace.

valve float is when the springs can't keep up to the speed the valves are required because it is not strong enough or has fitigued in time.

he had a chipped p28 with lots of mods underhood.. IM, headers, TB etc..

overreved... so whats the reason retainer crack?