81sunnyson Posted July 4, 2015 Report Share Posted July 4, 2015 i am attempting to use a14 shortblock with h89 a15 head want to know of any issues perhaps with pistons a14 is possibly 1978 and has h72 head but missing thermostat neck/ air pump passage etc want to run match box/ h89 head from 81 datsun 1200 forum says chambers are similar and h89 should fit need confirmation and or advice before going forward Quote Link to comment
81sunnyson Posted July 4, 2015 Author Report Share Posted July 4, 2015 motor to go inside 81 car do i need to chang motor mounts, oilpan, etc? Quote Link to comment
Morrisun Posted July 5, 2015 Report Share Posted July 5, 2015 http://datsun1200.com/modules/mediawiki/index.php?title=A-series_Cylinder_Heads#H89The dish in the piston determines the compression ratio. An A14 from a 78 B210 had center sump oil pan, you would need front sump oil pan and oil pickup tube! Matchbox dizzy will work. And something other than stock carb, H89 cylinder heads breathe very well! Quote Link to comment
81sunnyson Posted July 8, 2015 Author Report Share Posted July 8, 2015 h95 head? Quote Link to comment
Stoffregen Motorsports Posted July 8, 2015 Report Share Posted July 8, 2015 I just read through that link. I love that guy. Who would put that much effort into the humble A series? I would!!! But to my point. While reading through, I was reminded of the E series motor. I have seen E heads bolted onto A motors before. If I ever get another A motored Datsun (or 320 pickup) I am going to put an E motor in it. Talk about a screamer...!!! Quote Link to comment
Morrisun Posted July 9, 2015 Report Share Posted July 9, 2015 There's a huge write up here on all the different heads in the Tech-Wiki here it is: A-Series Cylinder Heads.The H95 is probably more ineffective than a stock round port head for racers as it has a huge restriction in the ports just at the major turn into the cylinders (okay that's probably an over-statement so don't take that one as gospel, but you get my drift). This was intended to create a swirl effect and it was used as an economy head. Don't try to port the H95 out to get rid of the restriction, you'll end up finding water, sooner than you think. I throw these away, after removing the rocker assemblies-IF you are into mileage and NO GO, this is the head for you! Quote Link to comment
king bee66 Posted July 17, 2015 Report Share Posted July 17, 2015 yes, you will need to use the a15 motor mounts the a14s wont work. Quote Link to comment
Morrisun Posted July 17, 2015 Report Share Posted July 17, 2015 Old engine mount A12 brackets won't fit, but new A12/A14/A15 brackets will: http://datsun1200.com/modules/mediawiki/index.php?title=A-Series_Engine_Swaps#Engine_Mounts Quote Link to comment
king bee66 Posted July 17, 2015 Report Share Posted July 17, 2015 I didn't do the swap that the op is doing, but I did the exact opposite, an h72 head on an a15, into a b210. The a15 brackets looked like they would work with my b210 towers, but they were just slightly off. Quote Link to comment
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