Teh Teardown and Build Up *pics*

[BlackJack]

haven't heard of anyone doing that with a 3400 before...see it all the time in 4-bangers though.

[jackal2000]

i have heard that its mostly for alum blocks, not sure if it can be done on an iron one...

[jackal2000]

anyone know a company that can make sleeves???

[jturkey69]

we have done iron blocks in the past, mostly small chevy though for the dirt track scene. I will try to call my uncle to find out what company we had gotten them from, maybe they can be had for the 3400...do you know what bore size, and depth stock off hand? I only did the installation, not the boring to get the proper size. scour them junkyards bro, there has to be a minivan or other gm car wrecked close by

[jackal2000]

yea i gotta call the junkyards when i get off work. the problem will be finding a block with low miles. 100k+ mile block really does me no good. and please do let me know what you find out.

[mustang_killer]

buy a new block imo, You'll get a used one for $500+. If I remember right, there are some risks with sleeving it, and Major Cash.

[jackal2000]

Originally Posted by mustang_killer

buy a new block imo, You'll get a used one for $500+. If I remember right, there are some risks with sleeving it, and Major Cash.

if its gonna cost 500 bucks for a block i'll just buy the pistons

[ptrudel]

do the pistons then lol

i dunno what a block's worth, but pistons are probly gonna run you what, 350-400?

[jackal2000]

more like $160ish plus shipping for all 6

[jackal2000]

well, i might be getting some Hypereutectic Pistons from A.R.I. racing. i think they are the ones for the DOHC 3.4

this will sky rocket my CR to about 11:1 so my heads which are already milled .005 will need some more. anyone know how else to reduce CR? thicker gasket?

[jturkey69]

have you checked 60degreev6 website?

no call back on my uncle yet

[jackal2000]

yea i have been looking there and i actually got some response from Ben on gagt.

Do you think you will be at the track next friday jack?

[jackal2000]

the pistons wont be here til MAYBE wednesday and thats not a lot of time for the guys to put it all back together so probably not unfortunately.

[jabartram]

Originally Posted by jackal2000

well, i might be getting some Hypereutectic Pistons from A.R.I. racing. i think they are the ones for the DOHC 3.4

this will sky rocket my CR to about 11:1 so my heads which are already milled .005 will need some more. anyone know how else to reduce CR? thicker gasket?

why do you think it will raise your compression so high? .005 is only really surfacing the head to make sure its not warped and seals properly, yes a thicker head gasket will drop the compression ratio a little. 11:1 is ok, unless you are gonna go boost. thats what my old 82 mustang ran. and you have a PT to work out the KR.

[jackal2000]

have you seen the DOCH pistons?? they are pretty much flat top with 4 valve reliefs cut into em. something like 7cc's taken out otherwise they would be total flat tops. im fairly certain that the 3400 pistons have a 27cc dish.

[jabartram]

Originally Posted by jackal2000

have you seen the DOCH pistons?? they are pretty much flat top with 4 valve reliefs cut into em. something like 7cc's taken out otherwise they would be total flat tops. im fairly certain that the 3400 pistons have a 27cc dish.

then you can have the valve reliefs machined deeper and larger.

[jackal2000]

Originally Posted by jabartram

then you can have the valve reliefs machined deeper and larger.

only if need be. its kinda silly anyways considering the 3400 only has 2 valves. i figure i can gain approx 3% of power per 1 point of C/R increase. from my research, i learned that gasoline engines can run on pump gas (93 octane for me obviously) up to 13:1 C/R and diesel (your experience) is 14:1 and up. correct?

[jabartram]

Originally Posted by jackal2000

only if need be. its kinda silly anyways considering the 3400 only has 2 valves. i figure i can gain approx 3% of power per 1 point of C/R increase. from my research, i learned that gasoline engines can run on pump gas (93 octane for me obviously) up to 13:1 C/R and diesel (your experience) is 14:1 and up. correct?

well higher compression does mean more power, it also means higher combustion temps, and anything above 11.5:1 93 octane is pushing it, you have to pull back on the timing to keep away from preignition. and you need to increase the cooling system capacity to keep up with the extra temps. and diesels normally run 20:1 to 30:1.

[jackal2000]

my goal is 11:1. how can i increase cooling capacity? bigger radiator?