Camshaft endfloat
Turbo Mini Forums

Anyone built an engine and had lots of the above?
Looking at maybe 2-3mm (not measured it yet), seems very high??, at that size it'll take every shim in our garage to get it right!

Rich

Here for the craic..

Supercharged Arden powered

Thought you machined material off the back of the cam timing gear to get endfloat in?

Maybe your triangle piece that helps hold the cam in place is worn. as this would make the end flow bigger.

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Not suposed to shim the cam, sometime a new triangle piece works but most of the time you need to machine the cam gear.

2-3mm seems a bit excessive though!

i take it your are taking the measurement with the timing gear on and torqued ? the free play should be between the gear and triangle plate
1mm ?

i noticed this when i was building up my 1380, wasnt until i put on the timing gear torqued it up etc that i realised that the triangle controols the end float. realy shouldnt be that big! the gap the triangle sits in isnt even 3mm wide...

Hard to explain, if you havnt got the timing ger on yet, put it on :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Once the cam gear is torqued up the endfloat should be less than 1 mm. Had once a cam gear that did not provide any endfloat just the oppiseite, the cam would not rotate...

Cheers all
Sussed it this morning, its been a while since i worked on a A series motor, can you tell

The cam retaining plate was badly worn, swapped it for another, torqued it all up and jobs a good un

Rich

Here for the craic..

Supercharged Arden powered

Cant you just turn those plates round and use the other side?

Sure you could but may be wrong!

NOOOOOOOOOOOOOOOOOOOOO!!!

There's only bearing material on one side!

it's just a plate isn't it?
either way, it won't fit the other way round!

be a bit daft to only have bearign material on one side, as a moveing face buts up agains both sides.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

going on from this im just building up my engine with a phase 2 turbo cam which is new from avon bar and a new triangle i have .6mm endfloat and the limit in the book is .178mm i havent yet put the cam gear on but im a bit worried as to why i am getting this much endfloat ?

because you havent got the cam gear on.

Put the cam gear on and tighten the nut THEN check the end float and post back with the results

Whey i have to officially say the haynes manual is absolutely useless in the way it shows how to do it, thanks sprocket and mini13 for responding just got to put the casings on now

Cheers Josh

Yeah I cant remember the number of times I've checked the end float - been horrified - then remembered to put the timing gear on LOL

AlexF

I did exactly this just last week. Mind you even with the timing gear on it was on the limit.

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Does it make that much difference?

I've thrown together engines before (in past might I add!) and not given this subject a second thought.... There isnt a reason for the side loading of the cam is there?

AlexF

I've also done this in my younger days of knowing no better.
Also before knowing to tickle the cam sprocket bore out to make it a nice slide fit on the cam, in the past I have walloped the cam sprocket on with a hammer.....!

Schrödinger's cat - so which one am I ???

Whats a dizzy drive?

On 16th Feb, 2010 Sprocket said:
Whats a dizzy drive?

Schrödinger's cat - so which one am I ???