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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster)  
Joined:
2001/10/15 3:29
From Arlington, TX, USA
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Registered Users
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Quote:
ddgonzal wrote:
wow, i see you went very much wider, but not very tall as in GX tall.
Port inlet is matched to an OEM A14/A15 gasket, not the GX gasket, so...
Posted on: 2012/7/3 2:45
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_________________
1973 Datsun B110 Coupe (A15/5spd)
1977 Datsun 280Zed (5.0L/5spd)
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/10/15 3:29
From Arlington, TX, USA
Group:
Registered Users
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Quote:
D wrote:
valves dont seem that big for high flow.
As I recall, the head builder felt like bigger valves wouldn't do much to improve flow?
Posted on: 2012/7/3 2:42
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_________________
1973 Datsun B110 Coupe (A15/5spd)
1977 Datsun 280Zed (5.0L/5spd)
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) 
Joined:
2002/10/28 6:49
From under the Firmament LOL no twiglight effect BS
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Registered Users
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Are those single springs for high revs?
valves dont seem that big for high flow.
Posted on: 2012/7/2 15:01
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"Australia" is formed by all its geographically listed territories "including" Norfolk, Christmas & Cocos Islands. The word include excludes all else before it therefore you have no legal rights.
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Re: H95 "Small Oval, Shrouded-Port" head |
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Moderator  
Joined:
2001/5/3 7:04
From 48 North
Group:
Registered Users
Contentmaster
Usermaster
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wow, i see you went very much wider, but not very tall as in GX tall.
Attach file:
 port_detail.jpg (21.85 KB)
Posted on: 2012/7/2 1:32
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/10/15 3:29
From Arlington, TX, USA
Group:
Registered Users
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Pics as promised... BIG ports:  Sunken combustion chambers (chambers coated with thermal barrier):  Close-up of port work (note the coating on the walls):  Anybody want it for their high-revving A-series? 
Posted on: 2012/7/1 20:39
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_________________
1973 Datsun B110 Coupe (A15/5spd)
1977 Datsun 280Zed (5.0L/5spd)
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/10/15 3:29
From Arlington, TX, USA
Group:
Registered Users
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Quote:
ddgonzal wrote:
needs very high RPM?
How would it work on a 1608 engine? Or an A15?
Personally, I think it would work fine on any engine that you can routinely drive in the 4500-9000rpm range. It doesn't do so well below 3500, hence why he says "worthless for a street engine".
Posted on: 2012/6/28 0:56
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_________________
1973 Datsun B110 Coupe (A15/5spd)
1977 Datsun 280Zed (5.0L/5spd)
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/10/15 3:29
From Arlington, TX, USA
Group:
Registered Users
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Quote:
dimlight65 wrote:
Quote:
D wrote:
Can you please post up some pics of this rare head, I really like the super deep tub chambers they are like some of the Harley aftermarket head combustion chambers focusing the charge in the centre of the piston with little wasted on the bore walls of the engine.
I will see what I can do... which translates into asking Tensandtwenties to do it for me since I am just barely computer literate.
I'll post up some this weekend. Probably in a "for sale" ad.
Posted on: 2012/6/28 0:42
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_________________
1973 Datsun B110 Coupe (A15/5spd)
1977 Datsun 280Zed (5.0L/5spd)
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) 
Joined:
2001/2/7 2:29
From Fort Worth, Texas, USA
Group:
Registered Users
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Quote:
D wrote:
Can you please post up some pics of this rare head, I really like the super deep tub chambers they are like some of the Harley aftermarket head combustion chambers focusing the charge in the centre of the piston with little wasted on the bore walls of the engine.
I will see what I can do... which translates into asking Tensandtwenties to do it for me since I am just barely computer literate.
Posted on: 2012/6/27 20:39
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_________________
"There are 10 kinds of people in the world, those who understand binary, and those who don't.
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/2/7 2:29
From Fort Worth, Texas, USA
Group:
Registered Users
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Quote:
ddgonzal wrote:
You can get new double-valve springs from Isky, Bprojects, Kameairi, etc.
The stock Nissan ones are the best since they are for 7000 RPM. The aftermarket ones are for 9000 RPM so wear the guides out faster.
peterzekert.com might still have some. Bproject is $100/set.
I have run the double valve springs before. I feel I should run them again in this engine but... um, well, I guess I don't have an excuse why not.
Posted on: 2012/6/27 20:37
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_________________
"There are 10 kinds of people in the world, those who understand binary, and those who don't.
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Re: H95 "Small Oval, Shrouded-Port" head |
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No life (a.k.a. DattoMaster) Joined:
2001/2/7 2:29
From Fort Worth, Texas, USA
Group:
Registered Users
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Quote:
ddgonzal wrote:
This is to go in your hicost?
Hicost! Funny. No I took it out of the Seven when it was too loud, buzzy, high-strung, and generally annoying. It is now in a B-210 called Lil' Wiggly... and proved to be too loud, buzzy, high-strung, and generally annoying.
Posted on: 2012/6/27 20:35
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"There are 10 kinds of people in the world, those who understand binary, and those who don't.
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