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   All Posts (Morrisun)


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Re: H89 vs gx head
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I to wish to add mud as well, I wanted a Datsun A series cylinder head ported and 42mm intake and 33mm exhaust installed, so I gathered up a GX, H72 and H89 heads and took them all to a machinist/engine builder, who used a flow bench for head porting. I wanted a cylinder head that would deliver, good flow between 3,000 to 7,000 for a slightly modified A12 engine- slightly larger pistons, 74mm and a mild camshaft.

He flowed all the heads and liked the H89 due to what I wanted and the short side radius of the head, coming in second the H72 head and the GX head last. However the he like the GX head for rpm over 6,000 with the larger valves, as the air/fuel mixture dumped straight onto the intake valve.

Point of personal ponder... he said the flow characteristics were VERY similar to first gen small block chevy heads.

Posted on: 5/17 2:38
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Re: Clutch/Flywheel specs for 1969 Datsun 1000
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David:

Thank you for all the leads on NEW parts need for this job.

Dave C does NOT have service manual, only factory parts manual.

I will pass info along to him.

AS for the step in the flywheels A12,13,14 and 15's that I have removed every engine,even the rusty nasty looking ones, reconditioned, resurfaced ones bought in a pile of A series parts, ALL had steps ground into them. Approx step .015", had one dozen ground all at once both A12 and the other A series flywheels. Have run them with no problems. Even the light weight flywheel from Bprojects had a step.

Seems odd that an A10 flywheel wouldn't have a step, but will have step ground out.

Posted on: 3/3 1:37
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Clutch/Flywheel specs for 1969 Datsun 1000
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Having trouble getting the right information on B10 4 speed flywheel and clutch:
Does the flywheel have step in the face for the 160mm clutch disc?
If so how much in thousandths?
What is the factory clutch disc thickness?

Owner what to keep this 43,000 mile coupe as stock as possible. Not willing to do the A12 flywheel, clutch and transmission swap.
Problem started with worn/slipping original clutch disc, had it rebuilt to A12 specs,as that was that we could find. Still slipped, resurfaced flywheel, machine shop did it without a step. Reassembled- slipped. Had .015" step machined in flywheel, still slips!

Found A10 pressure clamping force in Wiki Tech - 320kg, machine shop says that part is good. We are in the Portland Oregon USA area and have run out of ideas on the solution to this problem.

Specifications/Information would be greatly appreciated car as coming up for sale.

Posted on: 3/2 15:00
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Re: A13 h62 head help?
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2007/12/13 1:28
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Check Rockauto.com, Nissan 1974 B210 engine Intake/exhaust valves. They list length and head size $3.64 each

Posted on: 2016/10/29 18:04
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Re: Tom's $50 garage clean out (Pistons, valve springs etc)
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Are 73mm pistons standard or oversize?

Posted on: 2016/8/24 13:19
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Re: Windshield weatherstrip for coupe, where have you sourced?
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Nissan list a coupe W/S gaskets as 72610-H1801 but, supersedes to 72610-H1001 which is Sedan W/S gasket part number. I bought front W/S gasket from Scott's Old Rubber 5 years ago. It fit perfect, has NOT shrunk, split, bled or leaked- it's quite nice!

Posted on: 2015/2/23 14:18
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Re: Datsun 1200 Sunny A12 Connecting Rods for 255.00
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Sorry, they cost only $275.00us (they accepted that price as an offer)and free shipping- which makes them very tempting??
http://www.ebay.com/itm/For-Nissan-Da ... sh=item2a36411a32&vxp=mtr

Posted on: 2015/2/13 6:08
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Re: Datsun 1200 Sunny A12 Connecting Rods for 255.00
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No, but I like the fact they (4) weight 12oz less.

Posted on: 2015/2/12 3:14
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Re: a15 block mazda head
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2007/12/13 1:28
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Any idea as to what transmission would be need behind the head swap to hold up to the added torque?, or perhaps a 60A is plenty adequate? 63A?

Posted on: 2014/4/7 2:42
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Re: WTB: Front Disc Brake Baffle Plates
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2007/12/13 1:28
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I have a set I am willing to sell, sent you a PM.

Posted on: 2013/11/16 16:31
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