998+020 overbore questions.
Turbo Mini Forums

not turbo so not sure where to place it. i have "found" a 998 short block +020 overbore. bores look great ( were done when rebuild and never driven since) new flat top pistons etc. pistons sit flush with the block. but thing is. they kept it upside down on a floor and the block has allot of surfrage rust ( head to).

now in my mind there are 2 solutions. get the block and head skimmed slightly as possible and have the piston tops skimmed to. or have them skimmed and see if the pistons do not come out further then the head joint.

any thoughts.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Head looks like it's had work too

In the 13's at last!.. Just

I don't really understand the question, just skim it and make the pistons flush again as normal..

If you want the lazy mans solution stick it on the grinder as-is. Take a few passes with the pistons at tdc then rotate 180deg and do it again..

No one else think a light scotchbright might be worth a shot?

Skimming a few thou off each will be fine even if the pistons were just above deck height as you still have the gasket space.

But you've got nothing to loose by trying to clean with wire wool. Good chance it will clean up.

Ill try it with wire wool. Only point of concern then is the right hand side down corner of the block. Looks a bit deep to me between the pushrod hole and that water way.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Skotchbride is wire wool right?

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

No.

Scotch brite doesn't create such a mess.

for you
http://bfy.tw/3gPU

Edited by jonny f on 12th Jan, 2016.

A yeah okey... moms cleaning sponges. Should have googled it. Thought it was the overseas saying for wire wool or steel wool as we cal it pixwel. Grts

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

I was actually thinking about Scotchbrite soap pads (which are wire wool) and for some reason thought that's what Jonny meant too... although I agree, it does make sense to start with the green pads.

Either way Rammie, you're going to clean and rebuild it, yes?

Edited by PhilR on 12th Jan, 2016.

Try emery roll wrapped round a nice flat file.

Emery roll... another one for google there. And yes thats the plan. The story is that the short block was build by keith calver ( if i Wright it right) yet gona pul the pistons out and start from there...

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

If i have more toys than you when i die, I WIN

I'd try some 800 wet and dry around a block lubricated with some light oil first.

Block looks like it'll clean up, head looks like it'll need a skim.

If you do need to skim the block, the pistons sticking up a few thou won't be an issue.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

well i went to look for some sponges at moms house and once home went straight at it. head cleaned up nice but that block will need a skim for sure. to me it looks like the head can take up quite some cc's so compression want be an issue. the only doubt now is do i have the block honed or not. pistons sit nice and snug now and dont want to much space between bore and piston.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

or would you guys go at it with that 800 grid first.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

800grit on the block? No chance. That needs a skim. Head looks fine though.

gona get it tested on leaks while they are ad it

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Photos have gone?

ow crap. yes i cleaned up my photobucket somewhat. just a second ill fix it

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Skim on the block head looks spot on!