I am rebuilding a 99 2.4 engine and it looks like you can "safely" take damn near a quarter inch off of the heads surface. Has anyone done this before? Would you have to go with a 2.3 timing chain?
Why do you want to? If you want to bump the compression I would just use different pistons to do so.
FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!
Wade Jarvis wrote:Why do you want to? If you want to bump the compression I would just use different pistons to do so.
YOu could also get a thinner head gasket as well. I would only shave the head as much as truly needed to clean it up and make it true. Shaving the head to much can cause problems with getting the timing set correctly.
FU Tuning
MAX for a LD9 head to be cut is .020
what are you going to do about timing chain slack? remove a link?
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
the car is for the track only I was hopeing to put a 2.3 chain on it at this point i havent milled it yet still trying to find some info on it. But when I compare the 2.3 and the 2.4 head there lookes like a huge difference in deck height to me I am trying to get the most out of it I don't want to go that crazt just incase i warp it or something but it sure looks like there is alot extra aluminium there to me. has anybody attempted this before.
and as for removing a link? no thanx
also i asked earlier and got no good answers I have a fuel cell I would like to put in there for safety and for weight what is a good external fuel pump that will fill the 2.4 needs at WOT?
thanx
Any 4 cylinder front wheel drive car with a maximum wheelbase of 103" or less and a complete stock body, interior, frame and suspension. No bracing anywhere except inside the driver’s compartment (if roll bar equipped). Dash, interior, steering and pedals MUST remain completely stock for that make of car. NO 4 wheel steer cars.
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here is what I am working with here I am not going to say much just in case some one else is on here to
shave a 1/4" off......
2.3 chains and 2.4 chains (other then the SOHC 2.3) are pretty much the same length.
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
thats odd because i have 2.3 and 2.4 chains yet the 2.3 shorter?
Quote:
thats odd because i have 2.3 and 2.4 chains yet the 2.3 shorter?
THATS odd..cus i have a 2.4 chain on my 2.3 engine with no problems...now take into account that the 2.3 components are bigger and heavier..still want to use it?
the racejunkie wrote:also i asked earlier and got no good answers I have a fuel cell I would like to put in there for safety and for weight what is a good external fuel pump that will fill the 2.4 needs at WOT?
thanx
any answers for this one^^^^
since shaving the head that much seems to be out. What would be a good stock appearing head to put on there???
1/4" is a no go. There isnt enough material to do so without gasket issues and cracking.
Fuel pump- just about any capable of 65psi is good enough on a NA 2.4. Walbro does have universal inline pumps that will work fine.
realistically, a 2.3 head could be put on and lose you 13cc of chamber volume in the process and be undetectable to the general public.
sig not found
Would that be any 2.3 head. I have a few laying around. Also would I have to use the 2.3 manifold? I would like to stay with the 2.4's because it is a top feed.
Do a search for 086 swap, that is the more desirable 2.3 head followed by the 456. Really in your case any of them would be better because they have bigger valves and will raise your compression considerably. 086 has the biggest valves and ports. You will need to modifay a few water passages on the head but that can be found in pictures on here. I know for sure there is one extremely long thread on the topic. I have done this swap and retained stock cams, the difference was noticable. Also if you like the 2.4 intake, although it is more restrictive, you could probably modify it to fit the 2.3 head. People do the opposite for the 2.3 manifold and 2.4 head all the time around here. Hope this helps some.
scott (section8cav) wrote:Quote:
thats odd because i have 2.3 and 2.4 chains yet the 2.3 shorter?
THATS odd..cus i have a 2.4 chain on my 2.3 engine with no problems...now take into account that the 2.3 components are bigger and heavier..still want to use it?
X2, i have used both set ups on my LG0, but because the water pump gear is for a LG0\LD2 chain, thats what it has in it now.
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
