Oversize Everything

[gearspeed]

This is what shops overseas told me and some shops here said to me that if I go higher horsepower on a turbo I should oversize everything.
Is this true that I have to oversize everything on the engine?

Thanks.

[uls]

syempre coz high boost pressure puts a lot of stress on engine parts

stock N/A engine parts weren't made to handle high boost pressure

you need stronger everything

stronger pistons, stronger crankshaft, stronger connecting rods, stronger cylinder head bolts, etc

[gearspeed]

Yes I know stock won't handle the stress
I know I have to purchase aftermarket parts but which one is it the high comp pistons or should it be low comp pistons for turbo set up?

Thanks.

[uls]

high compression pistons for all-motor

low compression pistons for turbo

[gearspeed]

high compression pistons for all-motor

low compression pistons for turbo

Then what they said to me is wrong it shouldn't be oversize everything.

[uls]

huh?

ano mali doon?

what does that have to do with oversize?

if you're boosting an N/A engine (N/A engines have high compression pistons) you replace the pistons with low compression ones coz it's unsafe to use high compression pistons with high boost pressure (prone to detonation)

[Retz]

I think this is just a matter of simple logic. more 'muscle' equates to more power.

[niky]

"Oversize" does not mean "High Compression"

"Oversize" means to either bore out or "stroke" the motor.

Most likely, the shop in the US is suggesting you get a stroker kit, for more power potential. This gives you more effective displacement. Pair this with the correct turbo pistons and you'll have a turbo-friendly compression ratio along with big displacement.

[uls]

yep

they could be suggesting you either rebore the block to accept bigger pistons

or get a stroker kit if you wanna retain stock bore

[gearspeed]

Most likely, the shop in the US is suggesting you get a stroker kit, for more power potential. This gives you more effective displacement. Pair this with the correct turbo pistons and you'll have a turbo-friendly compression ratio along with big displacement.

I see yan ang hindi sinabi sa akin nung shops overseas.Basta sinabi sa akin oversize mo lahat kahit na sinabi ko na "its for turbo application".
Now I know what to do.

Thanks.

[uls]

i'd go for increase bore to increase displacement than increase stroke

increasing stroke decreases an engine's performance at high rpm coz the pistons have to travel further up and down

and also when pistons travel further up and down it increases wear

just something to think about

[gearspeed]

I see.
I just really like the sound of the turbo and we are doing an engine swap anyway para isang kabitan na lang din.lolz.
The car is rarely being use as well so we just going to put everything in it.

Thanks for the tip sir.

[gearspeed]

Garrett is offering me this one.
Any feedbacks about this?

http://www.turbobygarrett.com/turbob...t/boostadviser

Thanks.

[uls]

so you're asking kung ok ang garrett?

yes definitely

[uls]

btw, na-experience mo na ba mag turbocharge ng N/A engine?

alam mo siguro it's not as simple as ordering a turbocharger and installing it on the engine

[gearspeed]

btw, na-experience mo na ba mag turbocharge ng N/A engine?

alam mo siguro it's not as simple as ordering a turbocharger and installing it on the engine

Nope. Thats why I am doing research about it.I also know its expensive and complicated.lolz.
I was asking if the boost adviser is needed and if there are any feedbacks about the boostadviser?

Thanks

[uls]

just tell the shop what engine you're planning to turbocharge and they'll tell you what turbo is appropriate

ano ba engine?

from your post somewhere you mentioned 1zz or 2zz so you're planning to boost a celica or a corolla?

to give you an idea of what you need -- a turbocharger (i think they'll recommend a Garrett T28), a manifold to mount the turbo, a front-mount intercooler, a blow-off valve, bigger injectors, piggyback electronics, air filter, piping, 3 inch diameter exhaust

then you have to tune the car on a dyno

[gearspeed]

just tell the shop what engine you're planning to turbocharge and they'll tell you what turbo is appropriate

ano ba engine?

from your post somewhere you mentioned 1zz or 2zz so you're planning to boost a celica or a corolla?

to give you an idea of what you need -- a turbocharger (i think they'll recommend a Garrett T28), a manifold to mount the turbo, a front-mount intercooler, a blow-off valve, bigger injectors, piggyback electronics, air filter, piping, 3 inch diameter exhaust

then you have to tune the car on a dyno

Its a 2zzge swap into an AE111.
Dami ko pang kailangan na OEM parts para lang magfit yung 2zzge dun.lolz
Nagtanong at pumunta na ako sa mga shop ito mga experiences ko
One shop ok sana mabait yung shop owner kaso ayaw completely sabihin ang gagawin nila sa buong kotse at sa engine.Tinanong ko nga kung ano size ng turbo ang dapat ayaw na sabihin ang sagot "Stock muna tayo sir.Tignan muna natin sir". Sayang malapit pa naman sana sa amin.
Yung isang shop pera agad ang hinihingi (which is quite bad already because thats a big no no according to my friends) at nagtantrums pa sa akin yung shop owner nagsabi pa nang pasigaw na "kung ayaw niyo kayo magkabit kayo ang magkabit!!!". Nung marinig magdown kami dun na naging mahinahon. Naghanap na lang ulit ako sa iba.
Yung iba ok na rin kahit malayo sa amin kaso mga general lang sinabi sa akin hindi yung specific size like nung injectors,front mount intercooler turbo atbp.
Malaman ko lang specific size nung mga aftermarket parts then I'll order them overseas para kabit kabit na lang sa isang shop at para mabilis. Ganun din kasi aantayin ko din parts na oorderin nila overseas.
Ayoko pa naman walang ginagawa dun sa auto kapag ganun.
Kapag naipon ko na lahat ng OEM parts para magfit yung 2zzge engine sa AE111.Dadalhin ko sa not sponsored shop then test fit nila then ibabalik ulit yung 4afe engine ko iuuwi ko muna yung kotse then dadalhin ko na sa machine shop yung engine para madetermine kung ano size nung bore ang dapat then order ko lahat ng parts at sila magkakabit.Yung iba na hindi kaya ng machine shop. Yung not sponsored shop na ang magkakabit nun.

Kung may makilala lang ako na pwede sa bahay gagawin at magaling na mechanic dito ko na pagagawa eh para macheck ko mabuti ang gagawin nila.
Gusto ko kasi tutukan ko mabuti yung build dahil hindi lang hard earned money yan kundi para sa future ko din yan.lolz.

Balak ko GTX4088R or GTX4294R na naka side mount yung turbo ayoko tapyasin yung firewall at panget kasi yung set up na ganun.

[niky]

It's just a tool for sizing the turbo. In the end, it'll still depend on what your goals and budget are.

Most people here simply do it scattershot or go through a tuner who will design a system around the motor you have... and they'll do the turbo sizing for you.

[uls]

Balak ko GTX4088R or GTX4294R na naka side mount yung turbo ayoko tapyasin yung firewall at panget kasi yung set up na ganun.

so magpa-fabricate ka ng turbo manifold na papunta sa side

like this:



btw, i think the turbos you mentioned are a bit to big for the 2zz