Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

Turbocharge 304

Started by _Meggsy83_ , Jan 20 2015 03:47 PM

Please log in to reply

17 replies to this topic

#1 _Meggsy83_

Guests

Posted 20 January 2015 - 03:47 PM

Hello,

Currently working on a LH 4 door turbo 304 V8.

After any information on what other have done with turbo placement, manifold and exhaust.

Thanks Adam

Back to top

#2 EunUCh

Lotsa Posts!

Members
2,769 posts

Location:not this planet
Car:japos
Joined: 23-November 06

Posted 20 January 2015 - 04:13 PM

Air pump on valley cover might save some plumbing woes,still need to lower the comp. either way and the square cut gears sound

ok if they still use them.Cost might be the same or lower than twin turbo's as well ?

Back to top

#3 Lima31

Forum Fixture

Members
874 posts

Name:Lee
Location:Perth WA
Joined: 18-April 10

Posted 20 January 2015 - 09:35 PM

Most of the turbos are set up in the battery or opposite front pocket, exhaust for single turbos brought forward and under the balancer at sump level.

Back to top

#4 _Bomber Watson_

Guests

Posted 20 January 2015 - 10:16 PM

If the car is to be street registered, have you checked with the relevant authorities as to whether you can actually do this legally and get it on the road?

if not, lots of time and money wasted on a track only car.

Cheers.

Back to top

#5 Bigfella237

Socially Distant

Members
4,396 posts

Name:Andrew
Location:Far South Coast of NSW
Car:(s) not as many as I'd like but more than I've got space for!
Joined: 31-October 14

Posted 20 January 2015 - 11:53 PM

To expand on Bomber's comment...

The heaviest tare weight of an LH sedan was an L34 weighing in at 1306kg, as per table LA1 from NCOP3_Section_LA:

Table LA1.JPG 95.52K 4 downloads

1306 x 3 = 3918cc max capacity for a turbo'd engine so I think you're SOL... unless you go ICV

BTW, I note that chart says "Recommended Maximum Engine Capacity" but I've been told recently that those figures are a "line in the sand" and there is no tollerance even if you're within a few cc's?

Back to top

#6 _Bomber Watson_

Guests

Posted 21 January 2015 - 07:22 AM

Pretty sure i spotted a loophole somewhere under code la3 saying you could turboharge a factory option engine though, will need to have another read when im on a computer.

Back to top

#7 _Lazarus_

Guests

Posted 21 January 2015 - 09:42 AM

Ring Jake Edwards.

Back to top

#8 _coupe202_

Guests

Posted 21 January 2015 - 07:39 PM

If you are going to turbo charge a 304 I would do a twin turbo set up

Back to top

#9 _Meggsy83_

Guests

Posted 22 January 2015 - 12:30 PM

After from photo of what poeple have done with the dump pipe. Going 3", Single turbo over the battery tray

Back to top

#10 _moot_

Guests

Posted 23 January 2015 - 07:18 PM

i have a turbo 304 in a commodore.no need to drop the compression.its not 1984 any more.

single turbo is way easier and cheaper.plus less heat less piping etc.

Back to top

#11 YELLAcakeu308

Forum Fixture

Members
723 posts

Name:ben
Location:nt
Car:A10X
Joined: 30-April 11

Posted 27 January 2015 - 11:50 AM

hi moot , is your setup injected or blow thru carby?

Back to top

#12 _moot_

Guests

Posted 27 January 2015 - 12:47 PM

injected

Back to top

#13 YELLAcakeu308

Forum Fixture

Members
723 posts

Name:ben
Location:nt
Car:A10X
Joined: 30-April 11

Posted 28 January 2015 - 01:12 AM

is the engine fairly standard? & how much boost are you running? Ive got a single turbo blow thru setup for early heads but havent had a chance to run it yet.

Back to top

#14 _Meggsy83_

Guests

Posted 28 January 2015 - 01:09 PM

Any one have any photos of a turbo setup?

Back to top

#15 _greenmachine215_

Guests

Posted 30 January 2015 - 10:49 PM

The cheapest way ive seen it done is using factory cast exhaust manifolds turned back the front with a front cross over pipe from one to the other then a turbo flange upto where the battery would normally mount.

Blow through setups can be a pig to get right, if you have the efi stick with it the delco ecu have a boost reference setting in them that can be pulled into a map

If your doing a proper job make sure you set your ring gaps to suit, biggest killer of an aspo motor with a turbo bolted on is ring failure
I would set my top rings at .022" and second rings at .028"