Not expensive 5MGE mods - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 01-13-2012, 09:01 AM
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Not expensive 5MGE mods

I have stock standard x73 cressy 2.8L Rsi with 156000km on the clock , i don't want to do a engine swap as the engine is in perfect working order just yet...

All i want to do is boost the power about 30 - 40 kw

is there any mods that can help me??

Here is some images







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#2 Old 01-14-2012, 06:32 PM
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Sadly, there are no cheap modifications to make to the 5M-GE itself.
Any power gains require opening up the engine and become costly.
It is usually cheaper to upgrade to another engine.

One possibility is to use a larger (2.5 inch), free flow exhaust with low restriction mufflers.
But it will only give maybe 5-10 kW.

I'm interested in knowing how the S.African RS-i differs from my Australian spec GL-i.
Is it possible for you to post a picture of the build plate in the engine bay?
I will then use it to update my website:
http://members.iinet.net.au/~stepho/...cressida1985pr

- Stepho
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#3 Old 01-14-2012, 09:16 PM
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Quote:
Originally Posted by stepho View Post
Sadly, there are no cheap modifications to make to the 5M-GE itself.
Any power gains require opening up the engine and become costly.
It is usually cheaper to upgrade to another engine.

One possibility is to use a larger (2.5 inch), free flow exhaust with low restriction mufflers.
But it will only give maybe 5-10 kW.

I'm interested in knowing how the S.African RS-i differs from my Australian spec GL-i.
Is it possible for you to post a picture of the build plate in the engine bay?
I will then use it to update my website:
http://members.iinet.net.au/~stepho/...cressida1985pr

- Stepho


So, to summarize, the OP should either be happy with the power that he/she has from the 5MGE or sell this car and buy one with higher HP?
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#4 Old 01-14-2012, 11:29 PM
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Or upgrade to a 7M-GTE, 1JZ, 2JZ or 1UZ depending on $$$ and time.
But since he said he wants to keep the engine for awhile, he may just have to accept it as it is.

- Stepho
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#5 Old 01-15-2012, 03:16 AM
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Free Flow Exhaust

@Stepho

Interesting , my friend said i should put in a performance exhaust system in .
What about the possibility of a K&N Air filter , could it make a small difference??

One fix that i need is when at the moment of shift to a gear i feel a clonk and u can hear a clocking noise ,
which in turn makes me shift my gears slower , may this problem be in the drive shaft (universals)?

I will post a pic of the built plate later.

Last edited by ToyotaDrift; 01-15-2012 at 03:25 AM.
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#6 Old 01-16-2012, 08:52 AM
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A K&N air filter might add 1-2 kW.
The exhaust would only add 5-10kW at most, assuming the engine is in good condition and you have good quality fuel.
The 5M-GE is already in a high state of tune from the factory (ie gives plenty of hp for its cubic displacement).
So, sadly, you will not find any cheap/easy modifications giving you 30-40kW.

- Stepho
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#7 Old 01-17-2012, 04:59 PM
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the intake and filter won't make a noticeable difference. exhaust will do more, though 2.5 is a little on the high side. 2.25 with better mufflers would be best. 2.5 with cheaper/quieter mufflers.

I've seen cars with full intake pipe, exhaust, headers, tweaked AFM, and more I can't remember that dyno'd the advertised crank HP but at the wheels...if you assume (only) 15% loss through the automatic it's still only half of what you're asking for and those are all the mods to do short of cams (several hundred USD) or a turbo (sky is the limit)

-Russell
"You don't get to judge me for how I fix what you break"
'90 Cressida, 7M-GE, W58
'94 Pontiac Firebird LT1, T56
'12 Nissan Frontier V6, M6, 4x4
'90 Suzuki VX800
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#8 Old 02-29-2012, 12:55 PM
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How will the 1UZ fit

Im thinking of doing a 1UZ + Turbo swap. There is these guys in S.A that only does 1UZ conversions...

I was thinking how would my cressida w58 gearbox handle this engine?
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#9 Old 03-01-2012, 03:50 PM
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I know there are kits to put a W58 on the UZ. the UZ is in the upper range of the W58's capabilities so if you're hard on it, it WILL break but as long as you aren't regularly doing 5th gear WOT runs or hard launches off every stop sign it'll be OK

-Russell
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'94 Pontiac Firebird LT1, T56
'12 Nissan Frontier V6, M6, 4x4
'90 Suzuki VX800
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#10 Old 03-02-2012, 04:58 AM
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The 1UZ W58 adapter kit can be found at the Castlemaine Rod Shop in Australia.
They can ship internationally.

On interesting trick I heard of was to mount the left stock exhaust on the right hand side, pointing upwards and forwards.
The turbo was mounted to this and then a custom exhaust pipe was made which flowed down and under the engine, then to the back of the car.
Same for the other side.
Haven't tried it myself.

- Stepho
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#11 Old 05-10-2012, 12:01 AM
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well here is what i did get every lil bit of power outta my 5m first thing got rid of my ac and power steering and removed all the parts to lightin her up then i removed my egr valve and got a 2.5 exhuast along with a big old filter and homemade intake also advamced my timeing just slightly also got some e3 plugs and ngk wires you can get a msd coil pack but there a lil modding to do i left it as is for now till i can afford the swap i also wight reducted my car as much as possible with out damageing or loseing any parts cut my springs and since i use it for drifting run skinny tires in the back and fattys up front
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#12 Old 05-10-2012, 01:05 PM
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Quote:
Originally Posted by grin View Post
well here is what i did get every lil bit of power outta my 5m first thing got rid of my ac and power steering and removed all the parts to lightin her up then i removed my egr valve and got a 2.5 exhuast along with a big old filter and homemade intake also advamced my timeing just slightly also got some e3 plugs and ngk wires you can get a msd coil pack but there a lil modding to do i left it as is for now till i can afford the swap i also wight reducted my car as much as possible with out damageing or loseing any parts cut my springs and since i use it for drifting run skinny tires in the back and fattys up front


-Russell
"You don't get to judge me for how I fix what you break"
'90 Cressida, 7M-GE, W58
'94 Pontiac Firebird LT1, T56
'12 Nissan Frontier V6, M6, 4x4
'90 Suzuki VX800
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