Carburetors doesn't control the boost pressure. Its the wastegate (internal/external) dats controlling the pressure. U can set ur boost to stay @ 0.5bar even revving till 8000rpm.

For example my setup is spools @ 3000rpm, peak 1bar @ 3500rpm, stays 1bar till 7500rpm (revcut).

Looooong time edi la... Those kampung peeps got no work got and turbochaged a 4G13 Carbie engine. Stock Aisin carbie summore... After 2days carb kong, after 2months engine pecah

Ofcuz nola... Few years back edi, by dat time oso I wuz still schooling. I oso x kenal those old2 unkers.

If u dun mind the crazy FC.

And u might gonna encounter a few of these possibilities problem in the near future.

1~ Piston berlubang
2~ Piston magically disappear
3~ Cylinder wall damage
4~ Crankshaft jamed (tangkap crank)
5~ Conrod putus
6~ Head bengkok
7~ Driveshaft putus (very common for SagaIswara for massive torque)
8~ Piston ring/valve seal kantoi.
9~ Piston "kecut/kembang"
10~ Misfiring (massive powerloss) stock 4G13 oso can tapau.

Reason:
1~ Too Rich or too Lean at certain point
2~ Bad ignition/ignition timing.

Solution:
Convert to EFI 1st.

Simple la, lets say all those mod e.g

~Forged Piston and Conrod
~ARP studs
~And all those custom stuffs.

The total amount spent??? Might as well u get a better platform to play with. I m not saying dat 4G13/15 platform is not fiestable, but by simply BOT-ing a 4G91 for example, plonk in an Evo3 wiring and turbo kit..... easily touch above 160hp on stock Evo ECU.

Yes u can play around with the ignition timing while running on a carbie engine but u might gonna experience difficulties tuning the right AirFuel in the future. For surely u gotta redo the wiring to tap the ignition (coil, cam sensor/distributor) which is much the same and easier if u convert the whole system into EFI right??? And trust me, running "Lean" at the wrong time is not fiestable.

The Satria 4G13 is 1 gud example of a decent BOT setup. He is using a piggyback system to control both AFR and Ignition timing. Dats y his car can gain 180hp. Every engine dat plays around with the ignition timing can gain impressive figures. A proper tuning can help keep the engine healthy at its best.

Both are running on MAP ECU so no matter wat, u still gotta have a proper management.

No 1 is giving any bad opinion upon turbocharging a carbie engine. Like Sid mention, izzit "Fiestable" or not. And I've mention b4 in my previous post the types of turbos recommended, things u need, pros and cons.

If u all are planning to give it a try, go ahead... No 1 is stopping anybody. But its better to think long term

Nope, its my own humble opinion. Try asking around and do more research bout FI. Dats where u can get ur own theory and ideas.

Its hard for me to xplain bout wat will happen when a carbie is under pressure in details. Maybe we can go Yumcha and sembang2 more bout this matter.

Sid stays around Subang only maa... can meet up 1 day.

Correct. 55series is just the tires profile.

Even I m using 50series profile. Sangkut oso at the rears, but I found a solution to prevent the rears from "sangkut-ing" Skywalker sudah tengok dat day...

skywalker tu sapa??? eh jap.... silap orng ker???

This post has been edited by rozz_1291: Feb 22 2011, 03:23 AM

Your ride??? Car pic???

RS pad cheap maa.... RM100bux nee for SagaIswala.... Worth every cents.

Shawns car, nothing to say much IMHO la... Factory Stock Stended (FSS) 4G13 Carbie, kena rammed by gen2 and a few more minor accidents, well maintained, driver 9000 rpm jammed, 63whp on Dynamics.

Seriously even I oso dunno wats under the hood.Err.... I mean wats "inside" the engine

Got a member here offered me RM10k for my car....

Next week we go peksan K.Kelawang pulak ok???

Manifold MIA edi in my pile of junk. Gotta find another manifold for temporary so we can use it to measure the tapak. Demm where did I put my old SS Edition (Skywalker Spirit Edition) 12v Magma manifold.

Holy sheep!!! Yalor... Found it edi. Jom Sid we go to the engineering shop. 2day Friday I m free...

We go now lor... I 1 2 skip sumthing

Aiyaa.... then leter u are going to pek Japan hills with ronzai and geng???

Aiyaa.... no nid to fetch him lor. We go do ur tapak, lepak2 TCSS for a while till malam we go pek Japan hills.

U rev till 9000rpm how??? Mau kena whack oso ar???