The best way to upgrade a 4g93 na....

93na

500 RPM
Senior Member
Mar 9, 2009
597
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1,518
standard mod is air filter, exz, bigger t/b intake cam pulley, better spark plug and much more

hardcore mod= high lift cams, max p&p head, high com piston, standalone ecu and much more

there lots of topic on how to mod 4g93 na engine try searching it first....

good luck...
 

qamarul

Thread starter
Jun 7, 2011
2
0
501
ipoh
I/H/E???? whats that....

---------- Post added at 06:16 PM ---------- 6 hour anti-bump limit - Previous post was at 06:15 PM ----------

i think i want to put gti cams and 1.6 piston... is it ok... which type of piston i can use...
 

jamesweh

Known Member
Senior Member
Dec 10, 2005
262
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xtremeleo, you are also here. I have a SGTI for track. My problem is the blooming Siemens VDO. I cant tune it without using a Piggy back or Changing all the wiring plus ECU to MMC.
I am also waiting to do a rebuild as engine in SGTI is 160,000 KMS. Only suspension and chassis improvements were put in. Plus off course final drive from Mivec, CUSCO LSD and roll cage.
But my main problem is I cant tune the Siemens.
 

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jamesweh

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Dec 10, 2005
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My workshop quoted wt porting of head plus 1.6 pistons, rebuild. - RM2K
 

xtremeleo

3,000 RPM
Senior Member
Oct 18, 2005
3,247
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xtremeleo, you are also here. I have a SGTI for track. My problem is the blooming Siemens VDO. I cant tune it without using a Piggy back or Changing all the wiring plus ECU to MMC.
I am also waiting to do a rebuild as engine in SGTI is 160,000 KMS. Only suspension and chassis improvements were put in. Plus off course final drive from Mivec, CUSCO LSD and roll cage.
But my main problem is I cant tune the Siemens.
i heard siemen ecu can be tamed by using a perfect power smt6, or the works emu (iam not sure of the name ler..), tune dat on a loaded dyno and u'll be good to go. i wudnt go for a shorter fd if iam upgrading the power sir, the gears will feel too short nanti.

My workshop quoted wt porting of head plus 1.6 pistons, rebuild. - RM2K
sounds reasonable enough for me, iam not fond of porting, seen too many costly mistakes on frens' cars
 

jamesweh

Known Member
Senior Member
Dec 10, 2005
262
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You can see another SGTI in the HPC Endurance race, its a Titan sponsored one. MY SGTI share the same workshop RS. RS is pretty reliable. But again, its a Piggy Back. And Piggy Back cost money. I will most probably find a 2nd hand Unichip and get Robyn to tune it.
But I am getting slightly excited on my B4110 project.
 

dohc4g93

Active Member
Mar 5, 2011
25
1
503
Kuala Lumpur
Between pnp and high camshaft, which should be done first? Have anyone tried the newly introduced JASMA camshaft? is it reliable with good power increment in overall rpm range? any review on this product installed on 4g93 dohc with dyno chart?
 

MKMD428

500 RPM
Senior Member
Aug 21, 2005
876
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5,043
johore
I/H/E???? whats that....

---------- Post added at 06:16 PM ---------- 6 hour anti-bump limit - Previous post was at 06:15 PM ----------

i think i want to put gti cams and 1.6 piston... is it ok... which type of piston i can use...
intake, header, exhaust
 

ahmedshaikhani

Known Member
Feb 4, 2011
114
56
528
Kuala Lumpur
I have 4G93 SOHC in my country. I'm upgrading the head to 4G92 Mivec with mivec ecu, wiring and sensors. Going for turbo wiseco pistons, duratech rods, acl race bearings and GT30R turbine. I need to ask that for conversion of head which parts I have to replace ?
 

xtremeleo

3,000 RPM
Senior Member
Oct 18, 2005
3,247
464
5,183
Between pnp and high camshaft, which should be done first? Have anyone tried the newly introduced JASMA camshaft? is it reliable with good power increment in overall rpm range? any review on this product installed on 4g93 dohc with dyno chart?
between the two, i wud get the high duration/lift camshaft sir, iam not fond of porting it down without proper equipments, seen too many mistakes being done for pnp process. the most dat i wud suggest, is polish the intake runners, no comment on jasma cams. i suggest u stay clear before hearinng sumthing good about it sir
 

Shinjite

500 RPM
Senior Member
Feb 27, 2006
864
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1,543
Klang
For PNP, I would recommend it done by professionals and max it out 1 shot so next time no need to hassle to redo again. But if you fear on screwing up, cams is the best bet to go first because you can just swap back to stock cam when needed.
 

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