Mk2 16V Turbo - Original Stealth Racing car

[lewis1641]

you know the problem sam, you've got too many valves.

i want that garage!

[lemski]

i think the problem is u own a turbo'd mk2. but i also want that garage. i could have all my spaires in there pluss my car and still lots of room.


back to my serious thoughts sam. rings on 1 and 4 maybe if the oil n such is all on them 2 like u said at the meet. have you gauged the bores to see how worn they are

[Sam]

Ok, got a scrap 8v block today and a medium grade honer to try on it this evening to get my skills before doing the real thing, will post up before and after shots to see what you think and weather im up to the job [:s]

Here is a lovely looking piston after taking off the rings



here is my practice block



and here is my first go!



So... any top tips?

[SoundillusioN]

Awesome.. good thinking with the practice block. When I saw that piston I though it was yours for a sec! 

Looks good but not sure how it's supposed to be as I've never done it but looks like other pics i've seen... How much was the honer and how long did it take you to do one bore?

[Sam]

Awesome.. good thinking with the practice block. When I saw that piston I though it was yours for a sec! 

Looks good but not sure how it's supposed to be as I've never done it but looks like other pics i've seen... How much was the honer and how long did it take you to do one bore?

That piston is from my block  number 4 is pretty much the same but has caused no damage.

The honing tool was £25 from machine mart which is fine for a few blocks, any more and you want snap-on or somthing of a similair quality (according to a mechanic I spoke to today). The quality of the stones varies too, the ones I am using are a medium grade and medium quality. As for time per bore it depends on how much of a tolerance you have, I was on this for perhaps a 1 min which has taken off the glaze but I have not managed to create the 45deg cross hatch, prehaps a little closer to 20deg. If you watch a video of them doing this on a Motocross engine it will be in and out for 20 seconds if that so not quite sure whats best?

[SoundillusioN]

fook me!... surprised if it wasn't smoking like biatch!

Forgot about the cross hatching requirement... love the fact that you're tackling all this though. big thumbs up.

[tech1889]

Should have a 60/40 degree cross hatch your doing well mate 

[Sam]

fook me!... surprised if it wasn't smoking like biatch!

Forgot about the cross hatching requirement... love the fact that you're tackling all this though. big thumbs up.

She was, that was the initial problem... where the f**k is all this smoke coming from? Then when she started rattling and stalling with smoke pouring out of the engine breather pipe I knew there was only one thing for it.. load her up with all my stuff from uni, put on a nappy and make the 80 mile trip from home. Needless to say cutting out on every major roundabout between Leicster and Grimsby left that nappy truely sodden. As for doing to work myself, live and learn (and I have no money to speak of)

Should have a 60/40 degree cross hatch your doing well mate 

Cheers, i thought it was 45/45 like a knurling. Will have another bash now using a little more pressure and a heaver oil, will post pics up asap

[emery1990]

If I can do megasquirt anyone can   Well, I'll back this up tomorrow when my battery is charged up and see if I have just fixed my issue!

And if I map it myself ( with a base map to start with ) then literally anyone can do it!

[tech1889]

Just use a bit of fresh engine oil mate