fastcarls crank thrust oil gallery upgrade or other
Turbo Mini Forums

cant find any info on this and yes i have searched, basically after 2000 miles with little abuse my thrusts have given up, grey plate and all set up properly, will pop picks up when i find out as i know every one loves to see pictures, was a thread not long ago about chamfering the main bearing but cant find that

"Can I legally marry people now that I am ordained in the Church of the SubGenius?" aka i know jack sh"t

i also make things

i love coming home to chrome

here you go,

i'm part way through doing this but need access to a 90 degree drill.

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=196529

yes i did find them after a bit more searching in not the obvious place, why not just drill at a slight angle as the oil gallery goes straight down

ye for the screws stupid me

Edited by nogin on 5th May, 2008.

"Can I legally marry people now that I am ordained in the Church of the SubGenius?" aka i know jack sh"t

i also make things

i love coming home to chrome

yep for the screws lol

also this is only on the side which the crank gets pushed up against, would be piontless doing both sides i guess, wouldnt one of those small electric screw drivers work as there small enough

Edited by nogin on 5th May, 2008.

"Can I legally marry people now that I am ordained in the Church of the SubGenius?" aka i know jack sh"t

i also make things

i love coming home to chrome

yep that what I thought, so you would only need to mod one of the four thrusts.

would you do the bottom one on the clutch side as well? Just to stop the oil getting behind the thrust?
Edit; Remember...brass screws! :)

Edited by Jason G on 5th May, 2008.

yes you need to fix both thrustsm back, use a small elec drill and dont break the bit in the block,lol,

easy peasy lemon squezy, .
don't forgrt the £30.00 levy lol.
carl,

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

I actually came out with a sensible answer! Cheers fastcarl...another beer I owe ya!

Hi,

i took the engine apart and i want to do a lot of mods to build a better engine.

One of those mods is to get more oil to the trusts. I found the solution Carl made. But to keep it simple: What if you make a groove in the main bearing to the trusts?

This way more oil gets to the thrusts then normal.
Carls solution gets the oil more direct to the trusts but one thing that i keep thinking: What if you drill youre block and thrusts and you need to replace the thrusts? How do you get the new thrusts alined with the already drilled holes?

Modding the bearing can be repeated again and again and ag........

Has anyone tried modding the bearing or has more info about it.

Regards Paneermeel

there is nothing wrong with a A-series that a turbo can't fix.

www.turbomini.nl

One of the big problems is getting the crank hardened then polishing the thrust faces - not grinding them. If theyre just polished the carbon that creates the case hardening creates a rough sandpaper like surface that wears the soft bronze material away very quickly.
It needs to be ground to get a nice finish

I seriously doubt it!

I changed the van's std thursts for bigger ones after Carl had modded them for us. I used the original thrust as a template to drill the new one. As long as you are careful it will be fine.

If something is worth doing, it's worth doing half of.

you do not need a 90 deg drill, i set the tapping drill into a piece of 6mm bar 200mm long, this way you can almost get the threads square to the face, iv'e nevrr had any problem doing it this way .


Removing the residue/smut form the crank surface after hardening is a must and i cannot beleive anyone would be stupid enough not to do it,

on my cranks i take a scotch bright pad in the diesel vat and give it a bloody good scrub all over until it has all been removed,

then a good polish up with a suitably soaped emery belt belt on the bearing and thrust faces/tail end etc.

also make sure you clean the threads out on both ends, use a toothbrush /good gallery brush.

carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

I got a call from the workshop who is doing the work for me.

Mine engine is almost ready. They drilled a hole through the thrust and the main bearing, so the thrust is now oil fed :) But were now are talking about the need for the screws to hold the thrust. They are saying that there are not needed because the thrusts can not go anywere with is true.

But before i collect mine engine i want you're info about the need for the screws. Are they 100% needed or the icing on the cake?

there is nothing wrong with a A-series that a turbo can't fix.

www.turbomini.nl

Yes you need them otherwise the oil is pressure fed behind the thrust awell making the thrust push against the crank at all times

I seriously doubt it!

they are needed as you need to make sure the oil goes the right side of the bearing

ok then, tomorrow i will get some brass screws to get the last part done.

there is nothing wrong with a A-series that a turbo can't fix.

www.turbomini.nl