kenb
Part of things
Posts: 604
|
|
Dec 14, 2010 13:10:38 GMT
|
Years ago, I used to get my race engines balanced, but I never saw it being done as it was done by my engine builder. So my question is: Can just the flywheel and clutch cover be balanced on its own as a unit, or does it need to have the crankshaft attached as well.The reason being: I used to have an 1800 Zetec in my Anglia van with a re drilled 1800 flywheel to take a Pinto clutch cover. I never had any problems with vibration or nothing. The engine was pretty much super smooth all the way to very naughty speeds and RPM. The h/gasket eventually blew, and I took the oportunity to change to a 2 litre Zetec but using the same flywheel and cover. However at about 4500 rpm, you do get quite an annoying vibration, which can be felt right through the transmission. Now all the obvious things have been changed thats prop(new one) wheels, engine/box mounts checked etc etc. However, its now coming to light several other Zetec owners have a similar problem. Previously its been put down to car build, ie lack of soft joints using rose joints instead, lack of sound proof etc. The common denominator seems to be the 1800 re drilled flywheel on a 2 litre. The thinking is now that these flywheels are not are blanced to match the 2 litre to start with, plus the redrilling to take the larger Pinto cover just makes it worse. So hence my question in bold. Of course any other thoughts. Have some modifed Anglia Engine bay pics. and a Zetec Marina And this cos I just love my exhaust...
|
|
Last Edit: Dec 14, 2010 13:14:10 GMT by kenb
|
|
|
bstardchild
Club Retro Rides Member
Posts: 14,937
Club RR Member Number: 71
|
Engine balancingbstardchild
@bstardchild
Club Retro Rides Member 71
|
Dec 14, 2010 13:27:06 GMT
|
Ideally as one assembly but separate items should be fine
|
|
|
|
stealthstylz
Club Retro Rides Member
Posts: 14,926
Club RR Member Number: 174
|
Engine balancingstealthstylz
@stealthstylz
Club Retro Rides Member 174
|
Dec 15, 2010 11:08:46 GMT
|
Needs the whole lot bolting together to be balanced properly, so crank pulley, crank, flywheel, clutch, clutch cover.
Matt
|
|
|
|
|
|
Dec 15, 2010 12:42:26 GMT
|
for best results balance as a complete unit, but can be done seperately, new tyres should be balanced on the car really but 90% of us get them done on just a wheel balancer, depends how fussy your gonna be.
|
|
Volvo back as my main squeeze, more boost and some interior goodies on the way.
|
|
kenb
Part of things
Posts: 604
|
|
Dec 15, 2010 13:14:06 GMT
|
Yea cheers guys. I realise the whole thing with crank and front pulley etc etc would be the optimum solution, but as the concensus seems to be the flywheels only are the problem as they've been meddled with so to speak, whether they could be physically held in the machine that does the balancing on their own without the crank. (Never seen a balancing machine). I perhaps worded my question slightly vaguely.
|
|
|
|
stealthstylz
Club Retro Rides Member
Posts: 14,926
Club RR Member Number: 174
|
Engine balancingstealthstylz
@stealthstylz
Club Retro Rides Member 174
|
Dec 15, 2010 13:18:32 GMT
|
It depends where the inbalance is coming from. It sounds as if the holes that were drilled for the clutch cover were out of line slightly so the clutch is spinning eccentrically.
Matt
|
|
|
|
Copey
Posted a lot
Posts: 2,845
|
|
Dec 15, 2010 13:21:49 GMT
|
its best to get it all crankmatched idealy
|
|
1990 Ford Sierra Sapphire GLSi with 2.0 Zetec 1985 Ford Capri 3.0 (was a 2.0 Laser originally)
|
|
|
Engine balancingretrowagen1234
@GUEST
|
Dec 15, 2010 13:44:29 GMT
|
new tyres should be balanced on the car really but 90% of us get them done on just a wheel balancer. huh? EDIT: just found a site that lists it... www.christchurchtyre.co.uk/wheel-balancing.htmlSeems like stupid overkill to me. Ive allways had my wheels machine balanced and its allways been smooth..
|
|
Last Edit: Dec 15, 2010 13:48:18 GMT by retrowagen1234
|
|
|
|
Dec 15, 2010 13:55:22 GMT
|
new tyres should be balanced on the car really but 90% of us get them done on just a wheel balancer. huh? EDIT: just found a site that lists it... www.christchurchtyre.co.uk/wheel-balancing.htmlSeems like stupid overkill to me. Ive allways had my wheels machine balanced and its allways been smooth.. Thats exactly my point, there is the perfect way to do things and the perfectly adequate way to do things.
|
|
Volvo back as my main squeeze, more boost and some interior goodies on the way.
|
|
v8ian
Posted a lot
Posts: 3,824
|
|
Dec 15, 2010 17:55:38 GMT
|
Can you not fit the 2l flywheeel or are they those silly dual mass things
|
|
Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style. Austin A35van, very different------- but still doing it in style, going to be a funmoble
|
|
|
bstardchild
Club Retro Rides Member
Posts: 14,937
Club RR Member Number: 71
|
Engine balancingbstardchild
@bstardchild
Club Retro Rides Member 71
|
Dec 15, 2010 20:50:35 GMT
|
Can you not fit the 2l flywheeel or are they those silly dual mass things Or get a custom flywheel that's lighter and already balanced and made to your clutch specification £300
|
|
|
|
|
|
Dec 15, 2010 21:43:04 GMT
|
Yes the flywheel can be ballanced by itself.
All things being equal if thats where you think the problem is then ballancing it will either prove your right or send you looking at something else.
Either way worth elliminating it from the possible list
|
|
|
|
kenb
Part of things
Posts: 604
|
|
|
Can you not fit the 2l flywheeel or are they those silly dual mass things No cos they weigh a ton and they don't fit in a Anglia bell housing too well. As far as i know it only the blacktops that use a DM f/wheel. cheers for all the answers guys.
|
|
|
|
|
|
Dec 17, 2010 20:44:38 GMT
|
I'm sure I read that the 1800 flywheel is lighter than the 2 litre one. Could it be possible that the 2 litre one acts as a damper/balancer of some sort?
|
|
1953 Minor (Long term project) PT Cruiser
|
|
mrj
Posted a lot
Posts: 1,662
|
|
Dec 17, 2010 21:11:12 GMT
|
i am in no way a zetec expert, but modern engines also use the front pulley as a damper, if you fit an oldschool pulley that might be a reason ?
|
|
- 1971 VW 1600 TL Fastback - 1978 Passat GLS Variant - 1980 Audi 100 5E - 1981 VW aircooled panel van (sold) - 1983 VW Jetta Mk.I - 1984 VW Polo Coupé - 1984 VW Passat hatchback - 1987 VW Passat Variant - 1987 VW Passat hatchback - 1988 VW T25
|
|
kenb
Part of things
Posts: 604
|
|
|
As far as I'm aware we all use the original front pulley. Well 3 of the ones I'm thinking of immediately certainly do.
Yes the 2 litre is much heavier than the 1800 which is another reason the 1800 one is used. The thought had crossed our minds it may be something to do with the weight difference, but I'm not convinced tbh. The Pinto covers are a bit heavier than the Zetec covers, so it does put a bit of weight back on, so the final difference is only 2 or 3 kg I think.
|
|
Last Edit: Dec 18, 2010 6:11:58 GMT by kenb
|
|