hey guys im trying to build a motor for my hatch im new at this can yah help me out with some questions;
just seeing what you guys think its going to be a daily driver. do you think it will hold up and be reliable
i am building a b20vtec turbo i have darton sleeved 85.5 mm vs a 81 mm stock ls block which won would you use

 

bump help please

 

85.5mm and boost is not such a good idea in my opinion, thin sleeves and not alot of headgasket sealing area.

 

x2

 

96 GSR-T and cardinalredeg are you both dumb or you dont know hoe to read the original post says darton sleeved 85.5 mm

 

reguardless if its sleeved or not that is way to big. Dont every go bigger than 84mm or if u have to 84.5mm. Your asking for trouble.

 

if you sleeve it like he did...that means the aftermarket sleeve can stick be as thick or thicker...outside the bore...derrr

 

It is too big for boost. 85mm is the max I would boost on. Sell the block to a NA guy.

 

is the FI forum always like this now? The stupidity is depressing.

 

OP, it is "highly" recommend to NOT boost over a 85.mm sleeved block.
You can get your block re - sleeved down to 84 - 84.5mm.
Hope this helps.

 

85.5mm is not to big for a sleeved block i have seen many 86mm sleeved blocks handle boost

 

some one just answer the mans question and stop bitching

 

I think since it is a DD, you are going to see more heat than a track only car. The problem is the amount of surface area available when the bore gets bigger and bigger for the HG to seal on. I am running an 85mm bore turbo motor at 30-40psi. It is a street car, but not DD. DD=reliability. 85.5mm = on the edge y0.

 

i have a 84.5mm b20v thats boosted no problems here but if i had it to do over id go 81.5 ls block just for the little things i did not forsee with my build and be done with it. how much power you looking for anyway id start with that question first.

 

This man knows one or two things Might want to listen!

 

because it gets too hot too fast?

 

im a chick but thanks lol

 

im sorry for all the confusing im new and was just trying to get some answers...thanks for everyone's help tho

 

Your not confusing you asked a simple question dont let one terd in your tread stink the whole place up. I am sure you want reliability in a daily driver and I would think that by this point you can see where all of us are going with the replies except for one of us.

Sure you can boost on that big bore but its risky as hell, there is not alot of headgasket sealing area and with the expansion related to heat you get even less, the risk's outweight the benefits how would you like to spend the money to assemble the 85.5mm block to have issues with it right from the gate? If it was 85mm I would say boost it until you leave a damp spot on the seat, but once you get past that point its all risk. My friends 85mm Motor had a ton of coolant related issues and after 4 gaskets and 2 $2000 heads it still has issues loosing coolant into the chambers under load, the big bore works for some and for others its a rather large headache.

 

as mentioned before........you could sell the 85.5 sleeved block to an n/a guy......sleeve the 81mm ls block and go with 82 or 83mm.....give yourself some room to overbore cuz sh*t happens.

 

this is it in a nut shell.
you dont need to get your hair on end. please keep it in pm's

 

thanks for the advice