internal mods for TB42 for 200kw+

Post by **GQ4.8coilcab** » Thu Feb 08, 2007 5:01 pm

What starts needing to be done when you pushing it over 200kw. Are the standard rods alright, do pistons have to be replace and/or with dished ones. Anything else. Any help would be great
Cheers Julian
PS. i have tried the search and have not found what im looking for.

Post by **matthewK** » Thu Feb 08, 2007 6:41 pm

well if it been looked after well enought it should last to 300,000 before ya need major repares/rebuilds,

Post by **gorilla** » Thu Feb 08, 2007 8:46 pm

200kw NOT 200kms

apart from that i can't help

Post by **bogged** » Thu Feb 08, 2007 9:16 pm

would you not be better off with a lower stressed V8?

Post by **GQ4.8coilcab** » Fri Feb 09, 2007 7:08 pm

bogged wrote:would you not be better off with a lower stressed V8?

yes and no. Its a hassle for the conversion and a hassle for the turbo. Im weighing up both and seeing what needs to be done to the Tb42 first. Can anyone help?

Post by **weeman** » Fri Feb 09, 2007 8:31 pm

Most people dont do anything.

Krimnl just had a late model efi motor and i dont think the motor was stripped down turbo was bolted on and intercooler pipes connected up.

These motors are pretty strong you can do perfomance mods and do different cam however if you have good high comp efi motor just bolt a turbo on that.

Post by **GQ4.8coilcab** » Fri Feb 09, 2007 8:43 pm

weeman wrote:Most people dont do anything.

Krimnl just had a late model efi motor and i dont think the motor was stripped down turbo was bolted on and intercooler pipes connected up.

These motors are pretty strong you can do perfomance mods and do different cam however if you have good high comp efi motor just bolt a turbo on that.

Cheers mate, I heard the bottom end was good, just making sure. So they nobody touches compression?

Post by **weeman** » Fri Feb 09, 2007 8:44 pm

well if krimnl comes on he will let u know but i dont think anything was done to the motor

Post by **Hoonz** » Fri Feb 09, 2007 9:55 pm

tuff motor yes ... but if u wanna push the limits on a N/A engine
get it balanced/blue printed etc freshen the motor up if its got lots of kms on it ... some H/D valve springs and shave the head some get the compression up and a funky cam for it
edit ... get ya self a good ignition system ... MSD or some thing
the rods and pistons will hold up ok

Post by **hillbilly** » Fri Feb 09, 2007 11:02 pm

200kw? Engine or rwkw.
Cant see how you would do it without a turbo.(or nos)
If you go the turbo route, leave the compression low and
up the boost.

.

Post by **mcgill4433** » Sat Feb 10, 2007 8:57 am

i have a turboed tb42, just under 200kw at the wheels on 31s and am only running 7psi due to it being a new engine. Nearly run in now will be going to 12psi few more mods, im aiming for 200rwkw on 35s.
My motor is new but was built to standard specs they run 8.5:1 compression ratio witch suits the turbo fine.
Most important is the ignition system (keep it safe) boost retard distributor i had one built by performance ignitions was not cheap but works really well.

Post by **mcgill4433** » Sat Feb 10, 2007 8:59 am

and yeah one more thing once you turbo the clutch gos straight away factory is no where near strong enough.

Post by **cloughy** » Sat Feb 10, 2007 9:28 am

Hoonz wrote:tuff motor yes ... but if u wanna push the limits on a N/A engine
get it balanced/blue printed etc freshen the motor up if its got lots of kms on it ... some H/D valve springs and shave the head some get the compression up and a funky cam for it
edit ... get ya self a good ignition system ... MSD or some thing
the rods and pistons will hold up ok

i think his talking boosted

Post by **Hoonz** » Sat Feb 10, 2007 10:12 am

say no to turbos!

Post by **GQ4.8coilcab** » Sat Feb 10, 2007 7:03 pm

mcgill4433 wrote:i have a turboed tb42, just under 200kw at the wheels on 31s and am only running 7psi due to it being a new engine. Nearly run in now will be going to 12psi few more mods, im aiming for 200rwkw on 35s.
My motor is new but was built to standard specs they run 8.5:1 compression ratio witch suits the turbo fine.
Most important is the ignition system (keep it safe) boost retard distributor i had one built by performance ignitions was not cheap but works really well.

yer hoonz im talking turbo. I thought the comp ratio was 9.0:1 so 8.5:1 is ok. For ignition, i was thinking coil packs and get rid of the dizzy, or run a rotor button is the dizzy which is a bit more simpler.

Post by **Zac Zec** » Sun Feb 11, 2007 7:19 pm

Depending how much boost you wanna run(up to 8 psi ok)i would decompress the motor. I did on mine. Tuned it without decomp the first time, then decided to decomp and c what happend as you get told so many bull S@#t stories. Total different car now very happy

Website · Post by **GRINCH** » Sun Feb 11, 2007 8:20 pm

GQ4.8coilcab wrote:
mcgill4433 wrote:i have a turboed tb42, just under 200kw at the wheels on 31s and am only running 7psi due to it being a new engine. Nearly run in now will be going to 12psi few more mods, im aiming for 200rwkw on 35s.
My motor is new but was built to standard specs they run 8.5:1 compression ratio witch suits the turbo fine.
Most important is the ignition system (keep it safe) boost retard distributor i had one built by performance ignitions was not cheap but works really well.
yer hoonz im talking turbo. I thought the comp ratio was 9.0:1 so 8.5:1 is ok. For ignition, i was thinking coil packs and get rid of the dizzy, or run a rotor button is the dizzy which is a bit more simpler.

if you wanna run gas in the future coil packs can cause backfireing.

Post by **Mulisha** » Sun Feb 11, 2007 10:08 pm

[/quote]
if you wanna run gas in the future coil packs can cause backfireing.[/quote]

I didn't know that glad i'm just going to use a Petronix Ignitor ignition with high energy coil with a MSD boost timming master and Top Gun 8mm LPG leads (ment to be really good not sure yet)..

Post by **Jimbo** » Mon Feb 12, 2007 1:44 pm

I will be turboing my EFI patrol soon. Anything i should do to the ignition system????? (ps: Running lpg)

Post by **GQ4.8coilcab** » Tue Feb 13, 2007 8:14 am

GRINCH wrote:
GQ4.8coilcab wrote:
mcgill4433 wrote:i have a turboed tb42, just under 200kw at the wheels on 31s and am only running 7psi due to it being a new engine. Nearly run in now will be going to 12psi few more mods, im aiming for 200rwkw on 35s.
My motor is new but was built to standard specs they run 8.5:1 compression ratio witch suits the turbo fine.
Most important is the ignition system (keep it safe) boost retard distributor i had one built by performance ignitions was not cheap but works really well.
yer hoonz im talking turbo. I thought the comp ratio was 9.0:1 so 8.5:1 is ok. For ignition, i was thinking coil packs and get rid of the dizzy, or run a rotor button is the dizzy which is a bit more simpler.
if you wanna run gas in the future coil packs can cause backfireing.

just have another ignition map programmed on the ECU

Post by **bigears** » Wed Feb 14, 2007 7:25 pm

just be carefull with these motors turboed i've seen them blow huge holes in the the block and sump

Post by **cloughy** » Wed Feb 14, 2007 7:31 pm

bigears wrote:just be carefull with these motors turboed i've seen them blow huge holes in the the block and sump

Happens alot without correct tuning, mmm whats that funny little pinging noise, it'll be alright, dont worry about it

Post by **gqpete** » Wed Feb 14, 2007 7:37 pm

i got 240rwkw 25pound boost, no worries . 4 years of hard driving inc lots of comp work. still in ec. built by andrew at ontrack 4x4 east keilor. knows his stuff. simular motor as birdy.

Post by **Mulisha** » Wed Feb 14, 2007 7:46 pm

gqpete wrote:i got 240rwkw 25pound boost, no worries . 4 years of hard driving inc lots of comp work. still in ec. built by andrew at ontrack 4x4 east keilor. knows his stuff. simular motor as birdy.

Holy sh1t mate that's bloody awersome!

Got any pics of ya engine bay or anything?

I'll pm u

Post by **offroader-rama** » Wed Feb 14, 2007 7:48 pm

talking about ignition i just brought a crane cams fire ball xr700 points conversion for my carby'd gq 4.2 has any one here used or using the same????? fitting tomorrow thursday

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internal mods for TB42 for 200kw+

internal mods for TB42 for 200kw+

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Re: internal mods for TB42 for 200kw+

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