terryrscosworth

gents

what is the max you can bore a 205 block out to?

also does any one know what the standard size bore was from factory

thanks Terry

JamesH

iTrader: (21)

No idea but running +1mm at alls good

markk

iTrader: (2)

90.8 was std, and depending on the condition of the block you may get away with 93mm

LHD220Turbo

iTrader: (4)

out of interest can you go bigger than 93mm if you line the block, or is that a no no?

markk

iTrader: (2)

you can, ive actually ran 94mm but that was a very good block, eventually they crack the walls though.

Stu @ Claims Care Centre

iTrader: (1)

ive ran 1mm oversize with no probs

LHD220Turbo

iTrader: (4)

not suitable for high power applications then

thanks

105epwr

mines on 1mm no probs.

markk

iTrader: (2)

i wouldnt recommend more than 92.5 really for high power

LHD220Turbo

iTrader: (4)

thanks; i guess opinions will differ

i think if i were to go the big power, i'd go the long studded 200 block route, fit and forget so to speak

markk

iTrader: (2)

your right, opinions will differ, I would never ever use long studs, and never have. as fo fit and forget in a 200 block LOL - i dont think so.

LHD220Turbo

iTrader: (4)

really? what's your reasons for not wanting to go long studs? i've not had personal experience of them, but i thought it was the tried and tested route by lots of different people

what would you use for high power YB's?

Cragrat

iTrader: (4)

on a slight detour of thr topic

does anyone have the calculation to work out what size the engine will be after an overbore

as an example mine will be .5

ta

JamesH

iTrader: (21)

205 block, rebore it, wire ring it, std or grp A gasket and you're sorted

Toe Knee

iTrader: (2)

wire ringing is ok but...............i know someone who has a wire rung block and engine was rebuilt, for him to use wire rings again they told him he would need to get the block skimmed and the holes for the wire rings re cut and refit wires which tbh you can only skim the block so much...................

Plus wire ringing is about 160odd, and you can get the wrc gaskets for that nowadays.

PS james QEP dont do it anymore as matt doesnt do machining now!!

LHD220Turbo

iTrader: (4)

isnt wire rings a bit old school now?, isnt there better methods now of getting a good seal?

Toe Knee

iTrader: (2)

cleaned up block face and head face and a WRC gasket and ur onto a winner!!

Althou wire ringing althou old school does still work very well mate, althou like i said before either way costs as wire ringing you have to pay for the work done plus using a WRC one theres the cost of getting the block and head skimmed so their 100% flat to be safe.....

LHD220Turbo

iTrader: (4)

i'm sure i read a thread by Mark Shead ages ago saying you get inconsistency in sealing, it was either Mark or one of the other big tuners

i had a cometic on mine and it was perfect

Toe Knee

iTrader: (2)

Guess everyone has their opinions lol, i was going down the wire ringing route but the first place doing it damaged the block and had 2 fit 2 new liners then the 2nd place stopped doing it so proper got pissed off with it all and just decided to go the WRC route The block is already machined for long studs so should work ok once its all in the car