Hi guys just wanting opinions on a twin turbo carby 308 set up in a 75 lh torana , what im mainly interested in is your thoughts on problems or issues this setup may incounter with things such as rego issues, will the setup work , what turbos if its possible, etc etc cheers ben
twin turbo carby 308
Started by
_TUFF75LH355_
, Oct 17 2010 07:09 PM
8 replies to this topic
#2
_Gunmetal LH_
_Gunmetal LH_
-
- Guests
Posted 17 October 2010 - 08:04 PM
Ha! Went to reply and it got moved while I was typing...
First thing would be an issue with rego. If you could then there'd be insurance problems.
There's not that much room under the bonnet and in a draw-thru setup, unless there's a common intake manifold then you'd need twin carbies and that could be a challenge in itself getting them balanced/sync'd.
I reckon injection would be the go. Unless you go a single turbo, or twin turbo's into a blow-thru carby.
Could be done.
There's others here that would know a lot more about the specifics though.
First thing would be an issue with rego. If you could then there'd be insurance problems.
There's not that much room under the bonnet and in a draw-thru setup, unless there's a common intake manifold then you'd need twin carbies and that could be a challenge in itself getting them balanced/sync'd.
I reckon injection would be the go. Unless you go a single turbo, or twin turbo's into a blow-thru carby.
Could be done.
There's others here that would know a lot more about the specifics though.
#3
_TUFF75LH355_
_TUFF75LH355_
-
- Guests
Posted 18 October 2010 - 12:50 PM
thats what i was planning on doing a twin turbo setup into a decent size blow thru carby . Will i have trouble with emissions etc
#4
_Gunmetal LH_
_Gunmetal LH_
-
- Guests
Posted 18 October 2010 - 03:10 PM
Yes. That's where fuel injection would be better.
Emissions would be the least of your worries. Sorry to rain on your parade- but I doubt you'll get a 308 with forced induction passed by anybody.
The engine can only be something like 2/3 capacity of the largest engine produced in the vehicles range to allow forced induction, or the largest able to be fitted re: vehicle weight.
There's a ton of other things you'd need to think about aswell. Brakes, body strength, fuel system, gearbox/trans, diff... Many more that others would know about.
My opinion is a big single turbo would be better. A lot less complicated.
Emissions would be the least of your worries. Sorry to rain on your parade- but I doubt you'll get a 308 with forced induction passed by anybody.
The engine can only be something like 2/3 capacity of the largest engine produced in the vehicles range to allow forced induction, or the largest able to be fitted re: vehicle weight.
There's a ton of other things you'd need to think about aswell. Brakes, body strength, fuel system, gearbox/trans, diff... Many more that others would know about.
My opinion is a big single turbo would be better. A lot less complicated.
#5
_TUFF75LH355_
_TUFF75LH355_
-
- Guests
Posted 18 October 2010 - 05:13 PM
fuel injection isnt always the answer , i had a vy ss 5.7 litre with a t51r garret turbo bolted on the side of it. It made on a soft tune 523.2 rwhp on just under 10psi, now i failed emissions testing on every test no matter what we did to the tune, no matter how many cats i use still failed... now if i had of gone twins i would have passed first go, due to where the o2 sensor locations on the single turbo setup it made it impossible to pass , and there was no way you could move the o2 sensors to make them work.
when you say brakes, body stength, fuel etc etc whats the difference between running a big single setup or 2 medium size twin turbo setup, the same mods still apply either way
my main concern is not getting the car engineered it was more or less will a twin turbo setup work through a carby system, and if so will i have to comply with emissions , even though the car and engine are both pre pollution
when you say brakes, body stength, fuel etc etc whats the difference between running a big single setup or 2 medium size twin turbo setup, the same mods still apply either way
my main concern is not getting the car engineered it was more or less will a twin turbo setup work through a carby system, and if so will i have to comply with emissions , even though the car and engine are both pre pollution
#6
_Gunmetal LH_
_Gunmetal LH_
-
- Guests
Posted 18 October 2010 - 11:36 PM
TUFF75LH355- I meant that would have to be thought about aswell as the engine, regardless of whether it's a single or twin setup.
The idea of a single would be easier regarding plumbing, oil lines, balancing/matching pressures etc. in a blow-thru setup. Not that there's heaps in a VY but there's also a space issue under the bonnet in an LH.
The idea of a single would be easier regarding plumbing, oil lines, balancing/matching pressures etc. in a blow-thru setup. Not that there's heaps in a VY but there's also a space issue under the bonnet in an LH.
#7
Litre8
-
- Administrators
-
- 2,399 posts
Thrillseeker
- Name:Howard
- Location:Melbourne, Victoria
- Car:1976 LX SLR8000
- Joined: 05-February 07
Posted 19 October 2010 - 08:08 AM
Licence retention may also be an issue.
#8
_mervex_
_mervex_
-
- Guests
Posted 19 October 2010 - 10:22 AM
yes ,you can fit a single under bonnet ,no worries.fitted about 8 of them many moons ago.set up used a side draught weber,suck thru.yeah i know,flame on but they went like hell,didn't need to rev it and were nice and quiet.i will try to find some pics.
mervex.
mervex.
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
