Alg1k

iTrader: (2)

Anyone that's done the conversion know which pinion input bearing to use,,

MK MOTORSPORT

iTrader: (1)

hi
its a bush you need not a bearing ,martin from reyland should be able to help you

mark

stevieturbo

Just measure and make ?

Either source a bearing to suit, or as above a brass bush.

MK MOTORSPORT

iTrader: (1)

hi steve
there's not enough clearance for a bearing ,but like you say a bush prob oilight bush would be best as its self lubricating

mark

stevieturbo

What actual size is needed ?

MK MOTORSPORT

iTrader: (1)

i think of hand there is about 6mm difference between input shaft and counter bore in crank ,so a 3mm wall bush

Alg1k

iTrader: (2)

17mm-20.5 mm
ordered some oillight ones £2.68
Cheers

james kiely

iTrader: (5)

where did you order them mate ,i need one aswell

Alg1k

iTrader: (2)

http://www.getyourbearings.co.uk/plain-oilite.html

james kiely

iTrader: (5)

cheers matey

Alg1k

iTrader: (2)

Are you running a 3 plate clutch ??

james kiely

iTrader: (5)

im not sure yet ,im just gathering the bits up at the minute mate

Mark Shead

The ones I have done before I had the nose ground down to the stock size so no need to change bearing.

Mark

Alg1k

iTrader: (2)

I have found that the input shaft splines only just hold a 3 plate clutch so the fitment of the box fore and aft is critical
If its fitted slightly too close to the engine the last plate will bind on the splines nearest the box
You can see where the plates sat on my Bernie box
Ive measured it up and it seems that the gearbox adaptor plate has to be 6mm
Im having a couple cut next week
You have to have strategically placed bolts that bold the plate to the bellhousing utalising the voids in the Tremec box
I was going to weld an alloy plate to the bellhousing at first

Alg1k

iTrader: (2)

I thought about that Mark but was wondering about the heat treatment that's done on the shaft as its only so deep ???

Mark Shead

Never had a problem with Rods or My old car.

Mark

james kiely

iTrader: (5)

yes i can see that mate ,thanks for the info i will keep it in mind

Alg1k

iTrader: (2)

Just my luck for it to spit its input shaft out lol
If I cannot get these bearings to work I will do the same

Alg1k

iTrader: (2)

My clutch plates have a bell shape on the 2 outers
The center plate is flat
Im going to have a chat with the clutch supplier and see if I can use 2 center plates
I don't want the clutch dragging at all,

markk

iTrader: (2)

To ensure spline clearance on a box I have used I turned them bell shapes back a mm to give me that bit more into the box, and also deepened my flywheel recess.
Bloody triple plates. lol

Alg1k

iTrader: (2)

Ahh that could be an option
With the plates.

Rod-Tarry

Been in mine for 14 years with a lot of Torque being chucked at it.

Alg1k

iTrader: (2)

I was just worried that the spigot may give out and throw a spanner in the works
Its just my Luck,,

markk

iTrader: (2)

it's also lots more cost/labour hours for no gain.

Rod-Tarry

Why are you fitting a triple a duel will suit you better & drive better.

Rod-Tarry

The gain will be its proven to work over a long period at massive Power.

The same with trying to machine the Clutch its not required just think about the solution I can see it in your picture but of course MAD dont know what hes doing does he .

markk

iTrader: (2)

Rod the gain over grinding the shaft and using a spigot bearing is negligible if measurable at all, except having to strip the box vs fitting an industry standard oilite bush.

but as ever, you pays your money and takes your choice, after all, it is your money.

Just because Mark's method he chose many years ago worked then, and is still currently works, does not mean there is not another equally sufficient yet more cost effective way of doing it.

Alg1k

iTrader: (2)

Im going to be doing a lot of drag and track days hillclimbs etc etc
so it should cope with the heat a bit better ,
Im also making carbon air scoops to direct air into and out of
the bellhousing

It's Czech Mate

It must have been through hell and back the four or five times it's been used

Martin-Hadland

iTrader: (2)

A Skyline uses a bush rather than the needle bearing so I can't see the point in machining the nose of a new box, might invalidate the warranty. Having said that I have just machined my tail housing to put the gear lever in the proper place so I guess my warranty might be gone anyway!!

stevieturbo

Cars used bushes for years. And lets face it, the bush will only see rotation when you're foot is on the clutch and there is a speed difference between input shaft and crank.

So a bush should last a very very long time and requires no effort other than to fit it.

It will probably outlast the clutch anyway.

Martin-Hadland

iTrader: (2)

And the bush wont Rod??