Engine rebuild

My mate has a b1h that he thinks has dropped a couple of valves. I'm thinking of getting it off him cheap and sorting it my self. Know I'm no mechanic like but does anyone know if u need specialist tools?? I wouldn't of thought u do I'm just after a heads up b4 I buy

 

i think the only special tool youd need is a valve spring compressor other than that it would be standard tools

 

A torque wrench

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There are a few "Special" tools on here haha

 

Not too sure if you would need star sockets

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Depending on how far your stripping the engine re damage you might also need a puller to remove the flywheel, make sure your work area is nice and clean. Little telescopic magnets come in handy too plus some trays/bags labeled up to store your parts in.

 

As far as I know atm it's just a bent valve but I've asked him to look closer see if it might of snapped off and gone into the piston. And cheers. Will pick em up if I go for it. I'm also thinking of getting higher compression pistons while I'm there... Who knows more about the compression side of things??

 

What do you want to know?

 

Well I have looked into it but getting diff numbers and ratios all over the shot. I think the stock is 12.8.1 but higher compression seems to need boring out???

 

One way but you can alter the squish to increase the compression.

 

Ok what would u need for that??

 

Easiest way is using a thinner head gasket or by having the head skimmed
Have a read through this.
http://www.visordown.com/workshop/understanding-compression-ratios/15453.html

 

That's best bit of advice to start remember once I rebuilt a car engine smart arse me put all head stuff in one box all bottom end in another needless to say they never went back were they came out and I was 12 bolts lighter but it still ran lol

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That's what I couldn't find haha. So I need a smaller piston basically

 

you need a taller piston, but it's not quite that straightforward when you're changing compression

 

Oh I know it won't be a simple swop and go. It will need fine tuning to get it spot on

 

the bit tomo posted is only explaining cr, have a read up on actually calculating them

deck height, compressed gasket volume, top ring land, chamber volume and a few more bits as well and then a couple of dry builds to make sure you've got everything spot on. plus get it wrong and you can kill a nice new engine or end up with something that's gutless.

 

Ok let's say I can get someone to tell me the settings would I stand a chance??

 

I've got all that shit in a text book somewhere mate, I did learn it a long time ago but as the saying goes "you don't use it you loose it" haha

 

unless you buy off the shelf pistons you need to measure it all yourself, you could take sizes etc as read but not really the best way to do it.

i hate doing them, got to admit haven't done one for years but always used to sit down with a pen and piece of paper and write everything down