Ok, lets adjust this post a bit.
I am trying to lay out all the similarities & dissimilarities between the cylinder heads of the 4z.. engine family, specifically the 2.0L / 2.3L / 2.6L.
4zc1 4zc1-t 4zd1
Fuel Injected models seem to be the same casting, 2bbl adds a hole for mechanical fuel pump.
All the c1 refs I find show fuel injection.
All the d1 refs I find show carburetor, except 88/89 impulse.
C1s & 2bbl D1s seem to use 1.663" intake & 1.413" exhaust valves, while fuel injected D1s use the larger 1.736" intake & 1.453" exhaust valves from E1s.
4ze1 pre & post '93
Larger intake runners.
Larger valves.
Pre '93 hemispherical 74cc Combustion-Chamber(can you say 4cyl hemi?).
A.I.R. pump into exh system(smog pump).
Post '93 kidney shaped 58cc CombustionChamber(coupled with dished pistons to maintain ~8.5cr, also I think this is the size of c1/d1 chamber).
No more A.I.R. pump.
These heads technically are interchangeable, though a pre '93 e1 on either c1/d1 would likely result in a CR too low to run, unless its getting a blower/turbo with a huge boost. I want to go with one of the smaller Combustion-Chambered heads on my e1 for the performance gain. I am willing to go JY, reman, new old stock, aftermarket casting. Trying to find every suitable option besides the popular 'just grab a 2.3L head' hence the addition of the c1/c1-t.
I want to know a few things that I'm hoping my planet family will know;
c1/d1 Combustion-Chamber size.
Cam specs for all 4 heads.
Confirmation/Correction of the info I have listed.
If I go for the junkyard route how do I ensure that it will be rebuildable?
Add anything you know about these heads that I have neglected to mention (no I haven't forgotten that 1 overheat can kill them lol)
TIA,
~psguardian
I am trying to lay out all the similarities & dissimilarities between the cylinder heads of the 4z.. engine family, specifically the 2.0L / 2.3L / 2.6L.
4zc1 4zc1-t 4zd1
Fuel Injected models seem to be the same casting, 2bbl adds a hole for mechanical fuel pump.
All the c1 refs I find show fuel injection.
All the d1 refs I find show carburetor, except 88/89 impulse.
C1s & 2bbl D1s seem to use 1.663" intake & 1.413" exhaust valves, while fuel injected D1s use the larger 1.736" intake & 1.453" exhaust valves from E1s.
4ze1 pre & post '93
Larger intake runners.
Larger valves.
Pre '93 hemispherical 74cc Combustion-Chamber(can you say 4cyl hemi?).
A.I.R. pump into exh system(smog pump).
Post '93 kidney shaped 58cc CombustionChamber(coupled with dished pistons to maintain ~8.5cr, also I think this is the size of c1/d1 chamber).
No more A.I.R. pump.
These heads technically are interchangeable, though a pre '93 e1 on either c1/d1 would likely result in a CR too low to run, unless its getting a blower/turbo with a huge boost. I want to go with one of the smaller Combustion-Chambered heads on my e1 for the performance gain. I am willing to go JY, reman, new old stock, aftermarket casting. Trying to find every suitable option besides the popular 'just grab a 2.3L head' hence the addition of the c1/c1-t.
I want to know a few things that I'm hoping my planet family will know;
c1/d1 Combustion-Chamber size.
Cam specs for all 4 heads.
Confirmation/Correction of the info I have listed.
If I go for the junkyard route how do I ensure that it will be rebuildable?
Add anything you know about these heads that I have neglected to mention (no I haven't forgotten that 1 overheat can kill them lol)
TIA,
~psguardian
