Simo's Turbo re-build Progress (GMC pics & video - page 18...) - Page 12 - Saxperience

readie · 14th May 2010, 11:59

Quote:

Originally Posted by Simo

Holiday booked for tomorrow - I'm off to GMC at half 5 in the morning

Yeah, car is on a 1.1box at the moment. John's already overhauled it and fitted the diff' LOL. No hanging around!

didnt take him long!

so what was wrong was it the box? guessing not as its going back on? and must of been the clutch then?

blackie_2k5 · 14th May 2010, 12:25

great progress mate, really looking ofrward to hopefully seeing this!! cheers for the catch tank it arrived tuesday!! looks alot cleaner in person then it did in the pics, didnt take long to arrivve at all- happy

Simo^p · 14th May 2010, 18:13

The gearbox was in good condition so was fitted with new bearings and the diff...

The twin plate Clutch has some wear... Doesn't look as bad as it would have to be, but must be that.

Just leaving GMC after spending all day painting the engine bay... But mainly talking

Bit of news on the turbo and engine too... Will chat later.

Mathias · 15th May 2010, 00:01

Sounds great simo - whats the thinking behind the ma box spline kit that gmc do??

worth buying?

Simo^p · 15th May 2010, 00:15

Well, what a LONG day. Left home at 6am and just arrived back at 11pm

After spending a LOT of time talking with John, there wasn't a great deal of time left for the car prep, so I've had to rush this, if i'm honest.

My main goal was to get the bits of the chassis behind/beside the engine rust treated and protected... and looking blue

It doesn't have to be a show room shine, as it's never going to be seen again (gotta make myself feel better some how)

After years of popped drive shaft gaiters there was a LOT of grease coating the lower half of the bulkhead. Not a great job to remove! Still, with the couple of hours I had, I've managed to prep, primer, gloss and lacquer, so it should be a little better protected. Ideally, if I'd have had time Id have removed all of the steering rack, etc but unfortunately that was not going to happen on this trip.

I've nailed down the spec of the build with John now, which is good. After splitting the head/block, there is some standing-still damage to the top of a couple of the bores, that honing would not sort. So, rather than shell out for a re-bore, we are going to fit a JP4 lump. It will actually work out more cost effective and was supposed to be the plan from the start. So, got a few J4 components for sale soon

Couple of pics, then bed I think... more updates tomorrow.

Simo^p · 15th May 2010, 00:20

Quote:

Originally Posted by WIDE-VTR-TURBO

Sounds great simo - whats the thinking behind the ma box spline kit that gmc do??

worth buying?

For many years Ive used the AP twin plate lug drive clutch, which is a great bit of kit, but its far too harsh for road driving. I think this is why its worn out as its very difficult to creep in traffic, etc.

I'm a bit dubious about whether the MA setup will last with the power the engine should produce, so I'm giving the MA the best chance possible. By fitting the larger spline with its supporting bearing, hopefully the awful clutch judder Ive had will be removed. Its a decision I have to make now, as if I use the spline kit I need a larger splined clutch... so rather than fit a std spline clutch and then decide to upgrade splines later (which wont fit the clutch then), I've opted to give this setup a try.

Graeme^p · 15th May 2010, 18:39

glad to see this is moving on fast dude

good call on the jp4 lump aswell! shame thought seeing as your original lump only has low miles on

Simo^p · 15th May 2010, 19:26

Yeah, the reason I originally decided to keep my J4 is because it had only done around 20k miles and I knew it's history... But the JP4 has only done 17k, so it's all good!

fairmorn308 · 19th May 2010, 20:28

Any updates Simo?

Simo^p · 20th May 2010, 01:03

Updates... yeah, there is some stuff going on

The turbo has arrived back. John suspected the centre housing was cracked internally as there were signs of water leaking into the oil, as well as oil leaking out. If this was the case, I'm hoping this will be accepted as a manufacturing defect, but time will tell. In either case, the turbo has been fitted with a new centre housing. I just dont yet know if I have to pay for it or not

John has stripped the JP4 block down and is on with fitting the forged pistons/rods, etc. I've ordered some competition driveshafts, which should hopefully arrive at GMC at the end of this week.

I'm keen for the double master cylinder setup to arrive, as I'm interested to see that installed. Im hopeful this will give a big improvement with my brakes, due the the volume of fluid needed to work with the large 4-pots. Twin cylinders should be a nice upgrade

Maxwell · 20th May 2010, 01:14

he can talk like fuck cant he....and some wee work shop he has too

bigbarnett · 20th May 2010, 01:30

I just cant help but think you have a tree in your back garden the grows £100 notes on it.
it dose look like you have spent a fair bit off money on it and it looks good and am only guessing that it goes like a rocket good work any way and keep it up

barnett

Cupra-Craig · 25th May 2010, 12:23

any update simo

J222JRA · 25th May 2010, 12:51

Simo is on holiday guys, im sure there will be a good update on his return.

James

Simo^p · 1st June 2010, 00:49

Well, last couple of days on holiday now and Ive started to think about the damn car again

I'm actually missing lying underneath it in the cold, looking for the next thing to fix or improve.

Whilst I've been away a few things have been going on. The competition driveshafts should have arrived a week or so back - will be interesting to trial these and see how they fair. They are cheaper than genuine Citroen shafts, so if they are an improvement - bonus!

The Predator ECU has been built by Andy, who has spoken to John about engine/fuelling config' and has had a best effort at creating a base map, which should hopefully simplify the mapping on the rollers. The tracking reference shows that the ECU was delivered yesterday - on a bank holiday? Thanks mister Postie.

Before I came on holiday John told me he'd fitted the forged pistons/rods to the JP4 lump. The new race valves were partially fitted and were reported to be a fair bit larger than the JP4 items, which should help things along nicely.

Will update more when I learn something worth sharing

I think the build is going to take quite a few weeks yet.

Simo

SnaRe · 1st June 2010, 00:52

Ooh. It's gonna be a nice little surprise for you as it is for us to read! When are you back from holiday?

Lippy · 1st June 2010, 00:56

id be interested to see a piccy or link for the twin MC upgrade! who sells that? sounds funky and ive never seen 1 before

linksmiter · 1st June 2010, 18:07

Amazing !

Graeme^p · 1st June 2010, 18:18

doesnt sound like its going to make fcs dude

fingers crossed it does though!

I might have my new car this week aswell (fingers crossed)

im thinking track days this year?

Simo^p · 1st June 2010, 18:22

There's no way it's gonna make fcs dude. I doubt I could afford to pick it up so soon after this holiday either lol.

The new pistons will need to bed in too... Then have the bumpers to sort. Should all be fettled before august I reckon

What's the new Brum brum then?