Caddyshack

So straight edge across front of bell housing where it meets the block face. Ruler to front of input shaft is 11.8mm and that doesn't allow for the thickness of the ruler so easily 12 mm.

M K

iTrader: (9)

mine could only be 6.5mm max so yours is nigh on double so no wonder you couldn't bolt it up properly

M K

iTrader: (9)

Can you measure how much cosworth bell housing you have welded to the skyline box?

Mine is roughly 90mm cosworth casing

Caddyshack

I wonder if Mark did mine differently? He seemed to think not and got a bit fed up (hence my apology thread) when I accidentally implied that it may be too long. Did you have to take any off yours? If not then you would have a longer bellhousing than me and that would mean I have less room for clutch and centre push.

If I need to take some off mine then I wonder if I could use a 1mm cutting disc in situ or if the box has got to come apart?

Only other solution is to measure my total bellhousing length against yours and coleys and compare.

It would explain why mine cracked as I would be pulling too hard on the bolts.

I could also have a laser cut spacer made up for 5 mm.

I am doubly glad you measured yours. Coley has said a few times that I might need to check but disn't have the measurement.

Caddyshack

Yes, I have 90mm too of cossie and total length of bell is 4250mm from block face to where it meets the box which also includes about 20mm of what looks like a spacer or mounting flange.

M K

iTrader: (9)

Here is the total length of my bell housing



405mm measured with a proper steel rule not a loose tape etc

This is machined face to machined face NOT to block face when bolted up with dust plate

What's yours measure?

M K

iTrader: (9)

As you can see in this pic as well my intermediate box spacer part is 27mm thick

Caddyshack

I used a metal like yours and mine is bang on 400. Double checked with a tape and got 400 again. With the extra 5mm that would take me to 7mm on the spigot! Bugger! That would explain why I am really tight on the centre push and why I had probs bolting up and why I cracked it!


Thank you for taking the time to do those pics and measurements. I think I will be templating a spacer to be laser cut 5mm thick in ally! I guess I could use my spare dust plate and draw that on to MDf and see how that compares and the give that to the laser cutter...that or tip the box on its nose with a hole for the spigot and draw around unless I can find a technical drawing online for the mt75 bell?

Caddyshack

[QUOTE=M K;6623049]As you can see in this pic as well my intermediate box spacer part is 27mm thick


Yup, mine is the same. Are you on an r33 v spec box? I think it is same as r32 anyway.

M K

iTrader: (9)

It was an R33 box yes as it had the breather holes on the front top of bell housing

Caddyshack

So I guess I need to either chop the spigot - this only works if I have enough room for the centre push OR make up a spacer ring.

It looks like there are mt75 drawings on line, it is just if the laser cutting guy is happy to use them and if they are correct, if not then it is template time.

If Mark MK Walker was better then I could buy another box and send him then bell to cut and re do for me.

I suppose short term is to stick in 2 or 3 dust plates and hope they done rattle....maybe I could drill them, puddle weld and machine back so they become 1?

markk

iTrader: (2)

Just a quick one, do you have the front bearing plate bolted to the box?
If not the input shaft can come out of the box easily by 10mm

Caddyshack

At the moment it is off at the machine shop but I can tell it has always been out that far. I will double check, of course.

Plus the missing 5mm in the compared lengths of bellhousing confirms the same.

markk

iTrader: (2)

Give the input a real good shove inward till it is against the stops

Caddyshack

Ok, will do. And congrats on the 10,000th post

COLEYST200

iTrader: (3)

Toby I have tryed to ring you tonight when I got home from work it was on my land line I rang you on

Caddyshack

Sorry mate, I had it on silent and only noticed the missed calls today. I will give you a buzz a little later. Thanks for the call.

ossie cossie

All good info on here re- bellhousing measurements will jot it all down for future reference. Could save a lot I of time trouble shooting in the future.

Caddyshack

I spoke to Coley today and we agreed that 5mm spacer was a good bet so I cut up a desk shield for the bolt pattern in 2 parts and then copied that on to 2 pieces of 2mm steel and cut them to shape with the plasma then puddle welded them together and then linished them back so they now for a 6mm spacer. I will pick up my modified centre push mount on Monday.

ossie cossie

I have the 2 bellhousing parts at Mark MK Walker as well, probably half built. I hope he is on his feet again soon,

Caddyshack

Today I am going to try and fit my centre push back in for the last time and bolt the box back up using the spacer that I have made

Caddyshack

I used a dust cover for the whole pattern and then cut it in to two and reduced the metal I did not need with the plasma cutter, then I traced around with the plasma on 2 sheets of 2mm steel and then plug welded through and linished back to flat, now I can put one bit in from above and 1 from below and remove it if I need to get to the clutch without moving the whole box too far. This gives me around 6mm of spacer bringing me back to the 450mm / 451mm to match MKs measurement of his box.


I will spray paint it black on a piece of card and then I can send the card off as a template and have them cut from billet ally.

M K

iTrader: (9)

Fingers crossed it all goes together this time mate


If you have measured everything correctly you should be fine this time

Rob_DOHC

iTrader: (4)

If you ever need anything laser cut etc mate just drop me a PM I use quite a few different firms for laser cutting and would only take 10 mins to draw up something like your spacer in SW. Im only 20 mins from Guildford too

COLEYST200

iTrader: (3)

All the best with it Toby again

Caddyshack

Many thanks to all 3 of you.

OMG I bolted the centre push in and just offered up the box and with the spacer on it just slipped in to place and was touching face to face on the spacer without any jiggling, it just went on, I nipped up the bolts and shone a torch through the holes and the centre push is pretty much bang on 5mm away from the clutch fingers. To say I am relieved and over the moon is an understatement.

My mate is picking up the carbon bonnet from spoox tomorrow as they are racing at time attack rockingam and that leaves me to finish the heatproof img on the tunnel (thanks again to Coley for the right foil) and then raise the engine and box back up as one whole unit. I think I will bleed the clutch whilst the engine and box are out though and just check that it is working fully.

I have all my zircotec coated items to bolt back on and run her up.

Caddyshack

Thanks, that is very kind of you.

smiley

Well done on this krypton factor of a conversion mate you must dream of just turning and burning not far away now I've chickend out toby I'm going long box

Caddyshack

I think I have been unlucky on this one but now I have found the odd 5mm issue I am now hopefully clear to go.

The close ratio long box was my first choice and would have been in and done long ago, I was a bit put off by the cost.

Based on what I have tried so far the 2wd and 4wd is a huge bonus for the fun factor and once the conversion is 100% done a replacement box is dirt cheap. I am also considering a close ratio kit in a replacement box.

ossie cossie

Excellent news.

smiley

I'm saving hard mate lol and trying to renovate my house in between I'm sure we will meet at some point I look forward to seeing this monster go

Caddyshack

Tell me about it, I have just had 3 quotes for soffits, gutters and facias all above Ł10k plus a tenant move out leaving a mess that only Ł5k is gonna fix! Drive way is Ł25k so lots of saving to be done!

I hope I can show you it go in not too far a future.

smiley

It takes a skillful juggler mate

Caddyshack

The worst bit is that I compare everything to car prices or cossie bits...you get a Ł10k quote and think...yeah but I could buy a mk 1 Elise for that much! Or Ł5 k for this and you think....hmm, Oppliger long box or a cossie rebuild?

COLEYST200

iTrader: (3)

I love the way you think Toby I'm the same lol

Caddyshack

Well, here is the blue colour I am not sure about. If I don't like then it will go black when I go for rebuild. manifold on.





Closer shot.





Turbo on











Inlet and hart manifold done to match

ossie cossie

It don't look too bad. If you wear really dark glasses . What ECU are you running the coil on plug,s what type are they?

COLEYST200

iTrader: (3)

Well it's blue mate
Nice to see it back in there

Caddyshack

Not sure on the coil types, assumed they are Yaris ones but not sure, Mark Shead would need to confirm that as he fitted them.

The ecu is vipec, Mark Fitted and mapped it and Rod Tarry made the loom...it transformed the engine from the L8 it was on...it is just soooo much better.

800bhp

Good to see it back together. When you reckon you will have it running?

Never seen a blue coating before you going for a smurf look?