Forums/Z31P/z31-basics basic-modifications-basic-questions-aka-the-newbie-forum/vg30 w-series heads on 33 block
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sprtcrazy17: (2013-12-14 19:34:45)
Can someone verify that two holes need to be drilled into the head for water passages when fitting vg30 w-series heads onto a 33 block?
Source:
http://www.motoiq.com/MagazineArticl…san-VG30E.aspx Attached files
G-E: (2013-12-14 22:09:56)
If I recall there was a writeup on z31.com that listed the mix'n'match options for heads and blocks, but it came down to which headgasket for a/b vs w-series vg30
Since you have a vg33, you effectively have a larger w-series, you have to use the vg33 gasket, and that's it…
That's at least how I understand it
88sinZ: (2013-12-15 18:49:12)
If you're using a W-series head on a OWO block with a HG made for a OWO head, the gasket will be lacking the holes for the coolant passage the W-series head has. They will have to be drilled.
The main reason I advised against W-series heads on a OWO block in the VG33 info thread is due to the coolant passage being so close to the combustion area. I'm not saying it would fail, but it would seem more conservative to use the A/B head, or more so the OWO due to better casting and flow characteristics.
Axel kain: (2013-12-16 02:14:31)
http://www.redz31.net/pages/headwork.html#castings
michaelp: (2013-12-18 22:09:14)
Best bet is to use a VG33 head as it has better intake ports and larger exhaust studs…flows better overall. If your VG30 head has been ported, just redo the work on the 33 head - its entirely worth it especially being a ported OWO head out-flows even ported Z31 heads.
sprtcrazy17: (2013-12-19 15:08:18)
Cool. I was just wondering as i'm in the market for a short block and wanted to keep options open. Engine packages have gone up quite a bit in price at the junkyards
andyray187: (2013-12-30 20:44:57)
I put vg33 heads on my vg30et w series block casting for casting the 33 heads are ten times better smoother larger combustion chamber and intake runners ect. loving them avery step of the way.
FlyingT: (2013-12-31 00:07:58)
I just emailed to you the Nissan Service Bulletin with the A/B and W series differences and parts compatibility between the 2 engine types..
EM87-010 TS87-191 December 28, 1987
z31driftbandit: (2014-08-28 20:45:37)
ok, I'm doing a vg33 swap to my car and I'm using my stock turbo set up for it. any advice on anything I can use off my stock vg to gain more power or be a upgrade? I was kinda planning on using my vg30 for another build, but if I need to ditch that idea to make my track car better, i'll just do that.
thanks
chase
z31driftbandit: (2014-08-28 20:46:25)
btw, mines a w series.
slammedcoupe: (2014-08-28 21:44:30)
I cant brain right now (sorry to thread jack) so I can put 33 heads on my 86t block?
Augustus Maximus: (2014-08-29 03:57:43)
I cant brain right now (sorry to thread jack) so I can put 33 heads on my 86t block?
A VG33 head will be treated like a W-series head. A VG33e head will use a VG30 A/B head gasket if used on a A/B series block.
http://z31.com/wiki/doku.php?id=resources:w-series
88sinZ: (2014-08-29 05:21:07)
btw, mines a w series.
I cant brain right now (sorry to thread jack) so I can put 33 heads on my 86t block?
EDIT see response below
Axel kain: (2014-08-29 13:02:37)
you use a W series gasket if it's a W series VG30, and if putting the heads on a VG30, you use a VG30 gasket anyway.
z31driftbandit: (2014-08-29 13:19:50)
I'm not doing the head swap, I'm just asking what could I use off my vg30 to make my vg33 better?
Axel kain: (2014-08-29 15:52:44)
VG33 everything is better, except the cams and intake plenum.
z31driftbandit: (2014-08-29 16:29:14)
well if that's the case, I plan on having a hollowed out plenum and getting cams and cam gears later. but as of now I guess i'll just swap it in and use my vg30 for another car. kinda been itching to do a vg30e in a fc rx-7. just as a fun street car.
88sinZ: (2014-08-30 02:29:42)
ok, I'm doing a vg33 swap to my car and I'm using my stock turbo set up for it. any advice on anything I can use off my stock vg to gain more power or be a upgrade? I was kinda planning on using my vg30 for another build, but if I need to ditch that idea to make my track car better, i'll just do that.
thanks
chase
Use your 300zx camshafts. Preferably 84-86 camshafts. Check you lifter lobe-face areas for wear.
For the money you would put into a hollowed out plenum you could build a custom one with w/e style TB and layout you want. check out this thread for my custom design i used from a stock intake, intercooler end tank, and elbow w/90mm TB.
http://z31performance.com/showthread…Mad-Max-Intake
I cant brain right now (sorry to thread jack) so I can put 33 heads on my 86t block?
Use a head gasket that's early style specify 84-85 for gasket kit, even then check the head gaskets you want no coolant passages like the W-series!
Gregmatic: (2014-08-30 04:44:50)
Forgot about dat pleenums.... How's it working out for you?
88sinZ: (2014-08-30 13:40:33)
worked great. would recommend similar builds.