346 replies to this topic

[AndrewJ530]

Are you not going to overbore it then?

[Pauly]

Are you not going to overbore it then?

Well after some thought I think im going leave reboring, if I can get roughly 70'ish bhp out of a standard bore I'll be happy with that for this one. My next project will have a few more beans though .

[Pauly]

Today started with the arrival of my genuine MPI walnut dash, considering its out of a 10 year old car (1999 cooper sport) its immaculate, no fading or chips its stunning.

Onto the engine stripdown.

Stripped most of it down today, the heads stuck on at the moment and cant seem to free it with my usual method (wooden block and lump hammer) so ive put a thead on the techy section Click me!. Its ironic really, I was dreading getting the flywheel off, but it slid off no problem with the puller (know how to do them now Ive done a few , didn't think the head was going to be a problem, but if its not one thing its another .

A quick look and things and its not in bad condition at all, considering its done 80k plus, there will be wear on some parts but thats to be expected, and its nothing a bit of machineing cant take care of.

Some pics.

My walnut dash .



Start of the day.



End of the day.



Blue'ns current state.



Paul .

[Pauly]

Done some more work on the engine today.

Managed to get the head off after 2 hours of stuggling, with some help from my dad (extra pair of hands made it easier). Glad im going for a modified head as it needs new valves anyway, would probably clean up after a few hours work but I want bigger ones putting in anyway. Pistons look worse than they are, its just carbon build up and they clean up well. Looks like the crank will need a re-grind or polish aswell.

Just need to find out what marking are on 1275 pistons to indicate which is front (thread in techy section).

Some pics. (finding it hard to get my work area clean )

Short engine.



Head.



Crank journal (number 4 IIRC)



Paul.

Edited by Pauly, 08 November 2009 - 04:54 PM.

[Pauly]

Engines now stripped bare!

Took the last 2 pistons out, cam, followers and crank. Plus a few other bits and bobs on the front of block (oil pressure switch, release valve etc) Put all the critical parts in clean boxes and the auxilary bits in a plastic tray. Left the big chunky stuff on the bench.

A series blocks are heavy!! ive never stripped an engine down this far before and couldn't believe the weight of the crank, will do some weight lifting with a few of them I think .

Condition of the main shells dont look too bad, and again, the big end shells look fine but need to be replaced idealy. Cylinder bores look in good condition, no marks etc, so will be ok to just have them either de-glazed/honed. But I dont think I could of just dropped this engine into a car without a rebuild first.



Condition of the main bearing shells.



A bore.



Gearbox, will strip it down and it give it a service/cleanup.



Paul.

[Pauly]

Stripped the gearbox today, nothing out the ordinary but the main 3rd motion bearing has gone (lost one ball somewhere ), will give it all a clean then rebuild it with new baulk rings, new 3rd motion bearing and also 1st motion bearing (peice of mind).

Pics.

Like a coalmine down there.



3rd Motion bearing.



The gearbox .



Paul.

[Pauly]

Thought I'd post up a rough engine spec, nothing serious, just a more or less standard rebuild.

Block

1275 standard bore Rebored +40 (1310cc)
Re-honed/de-glazed bores
Block deck skimmed lightly Possibly 0.020"
Chemicaly washed
New cam bearings & core plugs.

Crank,rods, pistons

Reground
Hardened and balanced
New big end and mains bearings and also thrust washers
Std pistons, cleaned, new rings +40 21253 AE pistons
Std rods.

Cam and valve train

Kent MD 266 Cam Kent MD 276 Cam
New followers
Duplex vernier adjustable timing gears
1.5:1 roller rockers

Cylinder head

"Stage 3"
Ported and polished
Gasflowed
35.7/29.2 valves
D/V springs

Flywheel, gearbox

Std verto flywheel/clutch assembly, new clutch plate if needed
Std drop gears
Std gearbox, cleaned and rebuilt with new 1st & 3rd motion bearings, also new baulk rings.

Ancilaries, fueling etc

HIF44, serviced/cleaned.
Leccy fuel pump
Dizzy (TBA)
2 core rad
Blue silicon hoses (because my cars blue you see )

Think thats all there, where the ancilaries are concerned its mainly the dizzy, may retain the standard leccy metro item, or go with a mapped one.

Paul.

Edited by Pauly, 25 November 2009 - 04:45 PM.

[Saxo-Fiesta-Mini]

nice work

[mini mayhem]

lovely project. great work done and quick tooo

[Pauly]

Thought I'd post up a rough engine spec, nothing serious, just a more or less standard rebuild.

Block

1275 standard bore Rebored +40 (1310cc)
Re-honed/de-glazed bores
Block deck skimmed lightly Possibly 0.020"
Chemicaly washed
New cam bearings & core plugs.

Crank,rods, pistons

Reground
Hardened and balanced
New big end and mains bearings and also thrust washers
Std pistons, cleaned, new rings +40 21253 AE pistons
Std rods.

Cam and valve train

Kent MD 266 Cam Kent MD 276 Cam
New followers
Duplex vernier adjustable timing gears
1.5:1 roller rockers

Cylinder head

"Stage 3"
Ported and polished
Gasflowed
35.7/29.2 valves
D/V springs

Flywheel, gearbox

Std verto flywheel/clutch assembly, new clutch plate if needed
Std drop gears
Std gearbox, cleaned and rebuilt with new 1st & 3rd motion bearings, also new baulk rings.

Ancilaries, fueling etc

HIF44, serviced/cleaned.
Leccy fuel pump
Dizzy (TBA)
2 core rad
Blue silicon hoses (because my cars blue you see )

Think thats all there, where the ancilaries are concerned its mainly the dizzy, may retain the standard leccy metro item, or go with a mapped one.

Paul.

Ooops did I just change that?

Edited by Pauly, 25 November 2009 - 04:46 PM.

[AndrewJ530]

Haha i knew you couldn't resist!

[Pauly]

pictures of some goodies I had to buy today so that the machinist could check clearences.

Eagle eyed amongst you will notice ive brought 21251 piston, these will be going back to my local minispares saturday as ive ordered some 21253's.





Paul.

[Pauly]

Been doing a bit more work on the gearbox today, waiting on my diff stuff to come and other bits and bobs to start rebuilding it, hoefully my pistons should be here beggining of next week so whip them down to the engine place and get the last thou bored out, then block comes back, dry build, back to engine place for a skim then the build can commence.

Decided to go with a SRE fast road head which I will order soon.

Some pictures.





As you can see the bench nearly matches the car



Paul.

Edited by Pauly, 29 November 2009 - 07:04 PM.

[Pauly]

Just had a call from the machining place, my block, crank and pistons are ready to be picked up.

£175 which is not bad at all I dont think, thats without having it skimmed yet.

Paul.

[arnie]

nice 1 pauly, glad you getting on with it. work starts on my clubby this weekend .

simon.