fly wheel counter weight

adib · July 13, 2012, 09:46:04 PM

is it just the auto rx7 that has a counter weight behind the fly wheel

davehg · July 13, 2012, 10:00:26 PM

yeah thats correct

adib · July 13, 2012, 10:10:24 PM

thanks dave, was looking through my mazda book and thinking i did not put 1 off them back on lol, still have problems with the rx

davehg · July 13, 2012, 10:12:30 PM

thought you sorted it from what i read?

adib · July 13, 2012, 10:24:20 PM

yes it started ok again tonight but driving it home, it was pulling back and still smoking a bit and then would not start when hot again, engine just will not turn over fast when its hot

davehg · July 13, 2012, 10:40:58 PM

has it just been built? possible starter motor if it wont crank fast?

adib · July 13, 2012, 10:58:38 PM

yes i rebuilt it myself just wanted to see if i could do a wankle engine, rebuilt loads off piston engines from 4 piston to v8s in the past. starter is ok it turns over fast when engine is cold, sounds like the engine just stopping it from turning over when engine is hot

davehg · July 13, 2012, 11:09:56 PM

we can only guess on the forum but it could be something inside the engine causing it to be tight? maybe worth comp testing it to see if that reveals anything. id happily take a look over the car and test it but your a little far away lol

adib · July 13, 2012, 11:50:31 PM

its fine when its cold with plugs out loads of sound coming from plug holes not tried it when hot going to do that this weekend now ive got it home and it sounds like its blowing from the exhaust or turbos some where so may be that, if not ill give you a few beers to come and look at it :Giggle

TRIND-FD · July 14, 2012, 04:57:31 AM

Side seal clearance ? Maybe

davehg · July 14, 2012, 08:14:49 AM

No worries at all

adib · July 14, 2012, 08:30:48 PM

stopped raining about 3 o clock here so started to strip bits off it, there was a lot off oil in the turbos, so taking them back off. then i can see into the engine to see if tips are still there

if the side seals were to tight would that cause it not to turn over when hot

TRIND-FD · July 14, 2012, 08:48:46 PM

Quote from: adib;829285stopped raining about 3 o clock here so started to strip bits off it, there was a lot off oil in the turbos, so taking them back off. then i can see into the engine to see if tips are still there
if the side seals were to tight would that cause it not to turn over when hot

It\'s possible, seen it before, but could be something else. Few things to check first , earths ,starter, clutch.

adib · July 14, 2012, 09:47:59 PM

clutch was new 4 years ago fitted by mazda dealer, it turns over fine when cold so i would say starter motor is ok. thinking it must be some thing to do with my engine rebuild, was reading on internet and they were saying it needs to be driven for 20 to 50 mile for things to bed in as seals are new and will go tight when hot. does this sound right if so ill live with it not starting when hot for a while. and earths ill check tomorrow as its all in bits again :2Mad
thanks for all your help guys

davehg · July 15, 2012, 08:33:48 AM

I\'ve built many many engines over the years and never had an issue like this, yes it\'s true if all new internal components are used it can take a 1000 miles or so to bed in such as side seals etc, if the side seal clearances are too tight when they get hit and expand they will jam with the corner seals. I personally wouldn\'t want to keep running it with a potential internal engine problem as you may do damage. This is if it\'s an internal issue but I can\'t see what else it could be.