syebba wrote:I'd like to know at what approx readings a wankle goes pop!
& what are compression readings on a new engine
Me too.... I'm trying to find out what represents a healthy engine and what readings constitute a shagged engine.
syebba wrote:If engine still starts & runs fine,not worth worrying about,you'll probably get years out of it yet.
Keith how much does the proper mazda compression reader cost?
Probably £Hundreds?
ta stu..
Mine runs and starts fine so I'll just run it until it gives up the ghost then drop my other RX Motors rebuilt engine in... a dead simple job.
Keith was telling us he got a special deal on this tester and it still cost £1100 !!! Great bit of kit though and if he takes it to a few meets, he'll get his money back eventually doing comp tests for people for a few quid. Even if you're not really into engines, tuning and performance, it's still nice to know how your engines bearing up.
After talking to a couple of rotary engine builders, opinion seems to be:
Fresh rebuilt motors comp tested will give you 10 plus on all faces,once the motor has run it will give you 8's all the way round.
so new engines around 8's.
7's are fine then around 6's means its getting tired. The rear rotor normally goes first.
They both also say, don't worry about a bottom compression figure.... as long as it starts ok, just run it.... you know when it's knackered when it won't start.
Interesting stuff... I'd never really thought about it before.
