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Wide Ratio Gearbox And 1380 Engine Build


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#136 daveeeeee

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Posted 30 October 2010 - 08:41 PM

ah mate not again! need to make it quick release, turn your wiring harness into a series of multi plugs haha.

#137 AndyMiniMad.

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Posted 30 October 2010 - 08:43 PM

ah mate not again! need to make it quick release, turn your wiring harness into a series of multi plugs haha.

Ha Ha!! Your right....Nice work on the hinges for your flip front... Im watching to see how it all turns out.. Good job!

#138 MiniLandy

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Posted 31 October 2010 - 08:48 AM

Woah, that's some serious wear! Any ideas what caused it?

#139 AndyMiniMad.

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Posted 31 October 2010 - 01:11 PM

Woah, that's some serious wear! Any ideas what caused it?

It seams that when I built the engine up for the second time I must have forgotten to grease the thrusts after the dry build measurements were done. I reckon this wear happened as soon as the engine was started. I only drove it for 70 miles or so before stripping it all down again. Just goes to show, One tiny mistake and KAPOW!! one broken gearbox case. Im sure it could be repaired, (Welded up and reground), But Im lucky enough to have some other cases in the garage so its just a matter of swopping everything over.

Been busy with the "gunk" today getting it all cleaned up ready for the bits to go in..

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#140 danny1

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Posted 01 November 2010 - 02:43 PM

i did read some were that wear like that can be caused from using standard drops, and a high powered engine

#141 AndyMiniMad.

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Posted 02 November 2010 - 05:36 PM

i did read some were that wear like that can be caused from using standard drops, and a high powered engine

Gawd!! I hope not... Straight cut drops are really not what I want.. Way to noisy. I dont mind a bit of induction roar, But that whine would remind me too much of the wife, And lets face it I drive the mini to get away from all the whineing.

#142 danny1

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Posted 02 November 2010 - 05:42 PM

ahaha fair one, it was just somethign i read but i ran a 1380 with standard drops for a bit and that was a seriously fast engine till piston rings let go because it wasnt of set bored, ******* that block.

but yeah gera box was fine.

when you put it back to gether off the clutch housing with the gasket up to it and using a feeler guage check the thou

#143 AndyMiniMad.

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Posted 02 November 2010 - 05:53 PM

Im on hold for a couple of days with putting it all back together, Found out that the center main strap I got from Jonspeed came with dodgy bolts. Apparently the tensile strength is just not up to scratch, Very dissapointed with Jonspeed, I would of thought a company with thier pedigree would have checked the bolts before sending them out.
Anyway Ive been speaking to Martin of MRA Mini's and they are sending out a new strap with the correct bolts. will post pictures of the two types of bolt when the new ones arrive. Meanwhile I would advise anyone who has recently purchased a center main strap and bolts to get confirmation of the tensile strength of the bolts before fitting. Unless of course they came from Martin..

As a disclaimer Im Not having a go at suppliers here. But simply pointing out my own poor luck with Jonspeed.

#144 AndyMiniMad.

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Posted 02 November 2010 - 05:58 PM

ahaha fair one, it was just somethign i read but i ran a 1380 with standard drops for a bit and that was a seriously fast engine till piston rings let go because it wasnt of set bored, ******* that block.

but yeah gera box was fine.

when you put it back to gether off the clutch housing with the gasket up to it and using a feeler guage check the thou

My 1380 aint offset bored and neither is my mates. He has rallyed his for two seasons and has only stripped it this year to make sure all is ok!!! I think its a bit of a myth about this need to offset bore a 1380. Ok so cylinders 2 & 3 are pretty close but Ive been told I could go to 74 mm on my block if required.

#145 AndyMiniMad.

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Posted 03 November 2010 - 01:53 PM

My new center main strap and bolts arrived today from MRA Minis. Super fast delivery and a nice certificate to proove the tensile strength of the bolts. To hell with Jonspeed, I know where my business will be going in future...

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Im off to the garage to get these bits done. Might have it all runing again by the weekend..I hope this is the last time im ripping this engine out. Well untill ive built the 1330 supercharged monster that will be my next engine project. Watch this space!!

#146 AndyMiniMad.

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Posted 19 January 2011 - 08:36 PM

Hello again. its been a while since my last post, computer problems. Anyway a quick update on Haggis. Not good news im affraid. the gearbox was rebuilt again only for the same fault to come back. So its parked in the garage just now and has been in there for 6 weeks. its going to need another stripdown and rebuild. Im very peed off at the moment. Managed to get a new case from Fleabay. but this time im going to replace the flywheel housing allong with all new bearings and a new idler gear. Ive got all the bits but I just cant find the motivation to rip the engine out again. I know its got to be done sometime. As you can tell im feeling a bit sorry for myself just now.

#147 buddylove

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Posted 20 January 2011 - 05:30 AM

Just finished reading the whole thread. Wow! Way to go tearing into a transmission without any help. I am very impressed with the whole build. Hope you get back at it soon!

#148 AndyMiniMad.

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Posted 20 January 2011 - 12:38 PM

Just finished reading the whole thread. Wow! Way to go tearing into a transmission without any help. I am very impressed with the whole build. Hope you get back at it soon!

Thanks, Im trying to get motivated to rip it apart again.

#149 AndyMiniMad.

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Posted 14 February 2011 - 03:17 PM

Hello. Ive finally got myself motivated and decided to go for the staight cut roller bearing idler gears from MED..

http://www.med-engin...mp;vlang_id=130

Im really hopeing that this will cure the problem.. So over the next few weeks ill post pictures of the new gears going on. Just hope i can put up with the extra noise.

#150 AndyMiniMad.

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Posted 17 February 2011 - 05:20 PM

WooHoo!! The drop gears have arrived.

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Ive started the strip down, and the engine is ready to lift out. Also started to strip the rest of the car ready for painting.. Bought a compressor a few weeks ago and have been waiting for the tempreture to go up a bit. Its been Bloody freezing up here in the north of scotland. Anyway ill post some pics soon of it all coming apart. Snowman Rally this weekend so will try and get some pics of that as well. Might be a bit busy with the spanners though. We are car 85 if anyones interested..1380 Clubman.

Edited by AndyMiniMad., 17 February 2011 - 05:22 PM.





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