So hacked off with my mk2

[AvantSE]

I have a mk2 1.1 Pop but it has a 1600 xflow and type-9 fitted, with a brand new single piece prop. Over the years it has had various gearboxes and engines, and 3 different new props, but I never seem to get rid of a vibration at higher revs.

 

I have fitted a new gearbox mounting and now 2 new engine mountings (long bracket on nearside IIRC, short on offside, and 50mm rubbers), and it has a custom gearbox crossmember to line the prop up properly, yet the vibration is still there and since fitting the new engine mounts there is a bit of knock coming from somewhere.

 

Getting seriously hacked off with this now! Only other thing to check is that the exhaust isn't hitting anywhere, but other than that I have run out of ideas.

 

Am I missing something?

[Stu_B]

Have you had the prop balanced?

[Chris!]

Wheels??

[Yeomans22]

i had a problem with mine and the engine mounts meant the engine was only a couple of mm from the steering rack,

 

put some differnt ones aon and the engine was sitting further up no problems since

[AvantSE]

Well, I've been out yet again and had a good look round. I reckon the new mounts are raising the engine and therefore the box very slightly higher, which means the box is very close to the inside of the tunnel.

 

Trouble is, lowering the gearbox mounting will get the prop angle wrong and it is already nearly touching the exhaust (presumably another source of vibration). Think I'm going to have a lot of cutting and grinding to do sometime to get everything to sit nicely.

 

God, this thing pisses me off sometimes. I wish I'd bought one already converted

[AvantSE]

Have you had the prop balanced?

 

No mate, but 2 of them were new. I know this doesn't mean they're balanced but the noise seems to be coming from the front end.

[Mk2Jo]

Moving to Old Skool Chat for a wider audience/view

[turnover]

sell it me

[AvantSE]

LOL my wife and sons would kill me if I sold it - I only bought it back last year and sometimes wish I hadn't bothered.

[sambo]

One thing that may be worth checking is that the ex manifold isnt for a 1300. The 1600 is 1" taller and this will make the ex manifold touch the floor pan.

i had this.

 

 

PS ~ angles in the prop.... thats what UJ's are for.

[Retromotorsport]

This ' correct prop alignment ' is getting to me too Sam..

 

when you say that moving the gearbox mount down will get the prop angle wrong ... what do you mean ?

 

If your trying to get the prop straight, give up, you wont do it unless you move the gearbo tail shaft to the O/S by 1.5" .... as the pinion flange on teh diff isnt central .. for a reason, props conected to a moveable axle should never run staight as you get a wear line around one section of teh UJ bearings, then when you hit a big bump, they lock up in the unworn part and snap..

 

The only rule on props is the pinion flange angle matches the gearbox angle ..

like this [ gearbox /-----------------/ diff]

 

The BDA and ZF combo in a works escort sat at 4 degrees hence the commonly said , 'you need to tilt the diff up by 4 degrees'

[AvantSE]

I had issues before with a Sierra crossmember - the prop was seriously out of alignment and resulted in a lot of vibration; as soon as a custom crossmember was fitted, the biggest part of the vibration went away. It was also reduced by fitting yet another new prop.

 

Today I have cut off the edge of the crossmember to clear the exhaust and spaced it downwards with some thick washers - seems to have made things better from the vibration point of view (still not quite perfect, but it is an Escort after all) and has stopped the knocking in the tunnel.

 

So far so good.

 

Only thing is my gearbox seems to have started leaking oil over the last week or two, despite having a new seal fitted when it went in.

[Mr Sam]

you could go FWD....

 

 

*hides*

[AvantSE]

LOL - I know FWD is heresy on this site, but I've no problem with Fiestas etc. - was thinking of getting one eventually.

[lurch914]

sell it me

aint you got enough cars