hey guys looking for advice, as you may know i am forging my cdb and thanks to cdf racing for his help i need my block rebored for 92.5 wiseco forged pistons.

anyone know the rough cost of this and where in the north east of scotland i could get this done?

 

Circa £100 for bore and hone.

 

where are they located mate? and what you mean bore and hone? i'm new to all this lol

 

adzer,

Where about ar you in the North East of Scotland mate?

 

aberdeen mate, i'm not sure if there is anyone locally that can do this sort of thing

 

I'm in Aberdeen also.

AGRA Engineering Dundee, Welcome to our web site. in Dundee can do this for you and also build the engine if required.

 

nice one mate, what scooby do you have?

 

I have an STI V3. But its in the procees of upgrades with a forged 2.5 and rotated turbo set-up.

 

The crancase's are bored oversize to suit the oversize pistons (0.25/0.50 or bigger) and then its honed to give the final piston to bore clearance and a plateau finish to the bores.
You need to send the piston's with the crankcase's,so they can index them to the bores due to slight manufacturing tolerences on the pistons.

Mick

 

so i'm gonna need to buy my pistons first then get it rebored?

god i'm glad this forum exists

 

Yep

 

You need to measure the bores on your CDB BEFORE you buy the pistons - if the CDB has been bored before eg to 92.50mm and the bores are worn/scored, you may have to go up to 93.00mm pistons (if available) or look at having it re-linered.
Hopefully it will be a standard un-molested block.

Mick

 

do i need to measure the pistons thats fitted or the block? and what do i use to meassure it?

 

Get some measuring calipers and measure the bore, it will be obvious whether you're at 92 or 92.5 already. Then either find a local place to do it (mine cost me £80 for the whole job) or send it off to somewhere like API to do the job for 100+VAT. You can box up your block halves and a sample new piston and send them for about a tenner using courier services.

 

do you mean one of those verniar gauges? (spelling)

would they need the piston and rings or just a piston?

 

Just the piston's normally - you can gap your own rings when you get the crankcase's back from Boring.

 

I should have a vernier if you want one to borrow

 

i have a set at my work mate but thanks for the offer

 

just got my CDB back from the machine shop.I will start the rebuild tomorrow with ACL black bearings,Wossners,oh yeah!!

 

head skim looks proper