aen

me please? =X

08superwhite

my question is why is there so much failure in the rebuilding of the tc engine?

yellowxhoodie

iTrader: (16)

bcuz ppl think they know what theyre doing when in reality they dont. lol

not reffering to anyone on here at all, just putting it out there.

and also, theres so many things that could possibly go wrong, its hard to get everything just right the first time.

guttedtc0

x2

B_Real45

Building an engine requires not much skill. Just common sense and the ability to follow directions.

The hard part is the machining and measuring. That should always be left up to professionals.

yellowxhoodie

iTrader: (16)

im not saying its rocket science.
but it does require some knowledge and alot of common sense.
all it takes is forgetting one step, or doing on little measurment wrong...
and its all over.
lol

yamaha16bw

For people running overbore pistons. I'd guess your running a .5 overbore (90mm) since they seem to be mass produced that way, what head gasket are you running?

From my understanding its best to run the headgasket .5mm larger then your bore. Cometic makes a 89mm and a 92mm bore head gasket. So if you have a stock bore (88.5mm) then the 89mm head gasket would be perfect. If your running a 89mm bore should you use the 92mm head gasket? Seems alittle too large for me. Or is there another gasket out there I'm missing?

guttedtc0

those are the only 2 I know of

aen

hmm...im going to get started with this stuff pretty soon but i was wondering.

what do i have to do? like what do these terms mean? to sleeve a block and what does changing your pistons achieve that would allow you to handle more boost? and would just pistons and rods be good? or more?

guttedtc0

sleeving a block makes it "bulletproof" in a sense.. It will cost you $1000+ easy but your cylinder walls will not flex which will cause engine failure. Essentially you can run more boost

Pistons.. Purchase pistons with a lower compression that stock. This will allow you to squeeze more air into the cylinder without detonating aka run more boost

Rods.. probably the most stressed part of the motor.. you want stronger rods so they do not bend under extreme pressure


I currently have pistons and rods.. head studs and a head gasket. I was planning on running 18-20PSI with methanol on a high boost tune.. daily driving 12PSI. On a T3/T4 60 trim turbo.

But as you can see in my other thread I am having some problems

aen

really. hmm.

sleeving a block = mandatory take out engine time.
pistons = leave engine in?
rods = leave engine in?

how do you get to those without taking the engine out? can you go through the top?

yamaha16bw

I'd take the motor out for all of the above.

Always a good idea to have everything balanced and a hone before new pistons go in.

aen

cuz i figure, take engine out might as well get it sleeved and stuff too.

but i wans't going to sleeve hte engine till later on

yellowxhoodie

iTrader: (16)

awesome! still learning from this thread.
guttedtc, got a link to your build thread?
now youve got me curious.

guttedtc0

rods go onto the pistons and go in through the top

guttedtc0

only thread I have is the one about having trouble with these crazy vibrations

what are you curious about?

rhythmnsmoke

Getting sleeved later on = taking the motor out and taking it apart twice. Not something (imo) you would want to do.

aen

yea, i know haha but it would be pistons + rods while engine still in vehicle.

sleeve later on. but i'd do all three all together now

yellowxhoodie

iTrader: (16)

you said you were having problems as we could see in your other thread, so i thought you had a build thread. nvm.

im just curious about everything in general. always looking to learn more.

rhythmnsmoke

As per the advice from Ptuning in another thread....at minimum you should get it honed. You have to remove the block from the car and send it off to a shop for honing.