4G93 DOHC Problems

parakey

1,000 RPM
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parakey

1,000 RPM
Senior Member
Apr 30, 2012
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Kuala Lumpur
OK, good news is we finally made sure the stepper motor is working and TPS adjustment right - AC on, the RPM dropped and then was compensated, implying that signals are normal.

here comes the bad news, the RPM dropped to 600 then was re-compensated to only ~750 (NOT ENOUGH)
Have you tried sweelt's method yet?
 

drummydrew

Known Member

drummydrew

Known Member
Dec 7, 2015
470
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Petaling Jaya
Hello all, been too long since I last camped in here My Satria has finally got into a new set of problems which I can share here!

All started when I noticed puddles of oil where I parked. It wasn’t engine oil but gear oil, leakage was near the flywheel so had no choice but to drop the gearbox. As you can see..

EDB158B7-9340-4529-91BA-85528E0219E7.jpeg

supposed to be oil-free but it’s clearly wet

E7D6C251-F856-4F2C-99E7-D6CD455B0FE0.jpeg

punctured housing, that’s where the leakage was from. Something must have broken!

CA73F51E-88CE-4E05-9BA4-1B6AB64E2526.jpeg

One of the flywheel nuts were broken, couldn’t find the fragment. With this, it has damaged more parts..

6C3F1930-E1C2-4950-921A-DAE9CE0CF0CD.jpeg

All edges of the clutch cover

4B9016A7-150C-40E0-92E2-F6DCC5F1B313.jpeg

clutch springs have been hit

It all happened so quick that the gears showed no problems of noise and shifting except for the leakage. Car is sitting at my mechanic’s place now. Already bought new clutch set, pumps, drive shafts and some minor parts while we are at it.

With reconditioning the gearbox out of the question, I am left with the biggest problem now - a new used gearbox. My existing gearbox is a Wira 1.8 / Putra / GTI variant with code F5M222VRXE paired to a 4G93. Shopped around chop shops and most only have 1.6 normal variants which is a no go for me. Until now, came across a Mivec LSD unit with code F5M222XRWE and my mind is at the crossroads.

In the case of not being able to source a same 1.8 GB, should I:

1. Reconsider servicing / welding my broken one, slap it on while I continue the search.

OR

2. Get the 1.6 MIVEC one instead. If so, how big is the effect in the drive? I’ve read about the final drive and ratio difference between the 1.8 and MIVEC but I still need advices. The car is mostly driven on highway KL-Ipoh.

Helpppp
 
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Izso

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Izso

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Helmet Clan
Moderator
Mar 28, 2004
15,052
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KL
Hello all, been too long since I last camped in here My Satria has finally got into a new set of problems which I can share here!

All started when I noticed puddles of oil where I parked. It wasn’t engine oil but gear oil, leakage was near the flywheel so had no choice but to drop the gearbox. As you can see..

View attachment 578857
supposed to be oil-free but it’s clearly wet

View attachment 578858
punctured housing, that’s where the leakage was from. Something must have broken!

View attachment 578859
One of the flywheel nuts were broken, couldn’t find the fragment. With this, it has damaged more parts..

View attachment 578860
All edges of the clutch cover

View attachment 578861
clutch springs have been hit

It all happened so quick that the gears showed no problems of noise and shifting except for the leakage. Car is sitting at my mechanic’s place now. Already bought new clutch set, pumps, drive shafts and some minor parts while we are at it.

With reconditioning the gearbox out of the question, I am left with the biggest problem now - a new used gearbox. My existing gearbox is a Wira 1.8 / Putra / GTI variant with code F5M222VRXE paired to a 4G93. Shopped around chop shops and most only have 1.6 normal variants which is a no go for me. Until now, came across a Mivec LSD unit with code F5M222XRWE and my mind is at the crossroads.

In the case of not being able to source a same 1.8 GB, should I:

1. Reconsider servicing / welding my broken one, slap it on while I continue the search.

OR

2. Get the 1.6 MIVEC one instead. If so, how big is the effect in the drive? I’ve read about the final drive and ratio difference between the 1.8 and MIVEC but I still need advices. The car is mostly driven on highway KL-Ipoh.

Helpppp
ouch bro...

and the mivec gb ratios are not the same as the 1.8 one but pretty close. But I doubt it'll affect your driving too much. Since it's available now - why not just use it? IIRC the Mivec ratios are pretty long too so for highway driving ok la.


UPDATE - so I just found out after all these years that I've been lied to and there's no 1.8L Mivec. Hahaha.. means those 1.8 Mivecs I saw have been using the 4G93 gb all along.
 
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lsm1991

1,000 RPM
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lsm1991

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Sep 30, 2011
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hoho better hunt for the above....

mivec boxes are nice and all (lsd was optional i believe) but for ur use case.. long distance driving, im not sure u will like it
 

scoupe

1,000 RPM
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scoupe

1,000 RPM
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Mar 19, 2005
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i have not driven a car with the mivec box so i have no idea what the ratios are like. I have however driven a car with a short gearbox and a final drive of 4.7. At highway speeds of about 110km/h its at 35000rpm. Car always feels like its ready to go which was nice as it felt perky, but it was tiring to drive outstation on long highways
 
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drummydrew

Known Member

drummydrew

Known Member
Dec 7, 2015
470
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18
Petaling Jaya
ouch bro...

and the mivec gb ratios are not the same as the 1.8 one but pretty close. But I doubt it'll affect your driving too much. Since it's available now - why not just use it? IIRC the Mivec ratios are pretty long too so for highway driving ok la.


UPDATE - so I just found out after all these years that I've been lied to and there's no 1.8L Mivec. Hahaha.. means those 1.8 Mivecs I saw have been using the 4G93 gb all along.
I was considering hard cos I know that Mivec GB would be hard to come around again, little did I know that the 1.8 is harder to find! Maybe I’m also sceptical about change
Ah yes bro, there’s no 1.8 Mivec. From what I know the 4G93-Mivec hybrids are usually mated to 1.8 or 1.6 Mivec GBs.

hoho better hunt for the above....

mivec boxes are nice and all (lsd was optional i believe) but for ur use case.. long distance driving, im not sure u will like it
I never had a go in the Mivec ones, do you own one bro? How does it feel for long distance?

Hi Bro, one of the groups im in on FB a guy just posted a satria gti gearbox for sale. If you are still hunting you probably can contact him
Thanks for the help out bro! I’ll reach out to him, thanks a lot! Is it safe to say that Mivec 1.6 one gives me better acceleration, 1.8 one better top speed?