Stainless U20 Valves, springs, guides
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- Talented Enthusiast
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Stainless U20 Valves, springs, guides
Top quality Custom Stainless valves for U20. Swirl polished, ALL USA quality, These make an extremely durable valve setup.
21-4N alloy, Hardened tips, Slight oversize "seat savers"
4 intakes 100, (1.840")
4 exhaust 135, (1.45")
or 200 for full set.
Custom Silicon Bronze 2L Guides 85/set
Spring Set 100/set
Camstand shims 55/set
Racer Brown camshaft. 245 exchange
Email for additional info about small stem lightweight U20 Valve Kits!/ thx! JT
Expert machining and complete heads available.
21-4N alloy, Hardened tips, Slight oversize "seat savers"
4 intakes 100, (1.840")
4 exhaust 135, (1.45")
or 200 for full set.
Custom Silicon Bronze 2L Guides 85/set
Spring Set 100/set
Camstand shims 55/set
Racer Brown camshaft. 245 exchange
Email for additional info about small stem lightweight U20 Valve Kits!/ thx! JT
Expert machining and complete heads available.
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Last edited by JT68 on Fri May 19, 2017 9:13 pm, edited 7 times in total.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
- tjp
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Re: Stainless U20 Valves, springs, guides
This is beyond cinemax softcore. We are talking full on hard core Datsun Roadster XXX porn. Makes me want to run a U20.
My junk pile:
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
- redroadster
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Re: Stainless U20 Valves, springs, guides
Why is stainless best ?
Easier on the engine if they hit I'd guess
Easier on the engine if they hit I'd guess
Datsun dealer tech 76 to 87
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
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Re: Stainless U20 Valves, springs, guides
redroadster wrote:Why is stainless best ?
Easier on the engine if they hit I'd guess
Yes, they might bend easier if they meet a piston (rather than knocking a hole in it), but its really just excellent metallurgy for today's gas, valve seats, and either original or the bronze guides. Inconel and titanium are better for some extreme/turbo uses, but way more money, these are great for any non-turbo engine.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
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- Talented Enthusiast
- Posts: 2922
- Joined: Sun Jan 27, 2013 9:43 am
- Location: Cumming, GA
Re: Stainless U20 Valves, springs, guides
tjp wrote:This is beyond cinemax softcore. We are talking full on hard core Datsun Roadster XXX porn. Makes me want to run a U20.
LOL, here are the sexy ones for the pushrod engines:
http://www.311s.org/phpBB3/viewtopic.php?f=61&t=27624
(caution hardcore)
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
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- Talented Enthusiast
- Posts: 2922
- Joined: Sun Jan 27, 2013 9:43 am
- Location: Cumming, GA
Re: Stainless U20 Valves, springs, guides
added shims
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
- redroadster
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- Joined: Tue Mar 12, 2013 10:58 am
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Re: Stainless U20 Valves, springs, guides
Definitely a worry about the exhaust side for long term/hard use IMO
has chromium content ?
has chromium content ?
Datsun dealer tech 76 to 87
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
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- Talented Enthusiast
- Posts: 2922
- Joined: Sun Jan 27, 2013 9:43 am
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Re: Stainless U20 Valves, springs, guides
Top shelf, high chromium,21-4N. Excellent alloy for SS high performance exhaust valves. (Used in thousands of modern engines and racing applications.). Should go a very long time.
If you want Ti, can build those too-may require a 2nd mortgage lol. These are quite nice for the cost! J
If you want Ti, can build those too-may require a 2nd mortgage lol. These are quite nice for the cost! J
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
- fj20spl311
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Re: Stainless U20 Valves, springs, guides
Are they 7mm stems?
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
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- Talented Enthusiast
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- Joined: Sun Jan 27, 2013 9:43 am
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Re: Stainless U20 Valves, springs, guides
PM'd. These are std replacement versions, stock stem, and slight oversize heads to save your seats.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
- redroadster
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Re: Stainless U20 Valves, springs, guides
I did not think you could add much to Stainless ( iron and nickel)
try cutting through a stainless bolt and a low carbon bolt , after you get through the oxide , which is a bit tough it cuts easily , much softer than the steel
try cutting through a stainless bolt and a low carbon bolt , after you get through the oxide , which is a bit tough it cuts easily , much softer than the steel
Datsun dealer tech 76 to 87
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
-
- Talented Enthusiast
- Posts: 2922
- Joined: Sun Jan 27, 2013 9:43 am
- Location: Cumming, GA
Re: Stainless U20 Valves, springs, guides
Added Racer Brown cam.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
- fj20spl311
- Roadsteraholic
- Posts: 5009
- Joined: Mon Nov 28, 2005 3:54 pm
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Re: Stainless U20 Valves, springs, guides
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
-
- Talented Enthusiast
- Posts: 2922
- Joined: Sun Jan 27, 2013 9:43 am
- Location: Cumming, GA
Re: Stainless U20 Valves, springs, guides
Naturally these have hardened tips as well. ( must be ground, can't be machined ).
It's actually much less of an issue on the U 20 since the last pad is the hardened wearing surface. The lash pad serves as a wear cap and the wear usually occurs on the underside of the lash pad, not the valve.
I maintain a very high standard with my reproductions. No cheapy,budget stuff allowed. If I would use them in my engines, it's excellent, end of story! Peace Jt
It's actually much less of an issue on the U 20 since the last pad is the hardened wearing surface. The lash pad serves as a wear cap and the wear usually occurs on the underside of the lash pad, not the valve.
I maintain a very high standard with my reproductions. No cheapy,budget stuff allowed. If I would use them in my engines, it's excellent, end of story! Peace Jt
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
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Re: Stainless U20 Valves, springs, guides
Stainless steel alloys have been the go to material for valves for many, many, years...
From Engine builder mag. website:
"The most popular materials for exhaust valves, however, are austenitic stainless steel alloys such as 21-2N and 21-4N."
http://www.enginebuildermag.com/2005/12 ... t-engines/
There are many different stainless steel alloys, for many different uses, I've seen one so soft just gripping it with a pair of pliers would mark it with the lines of the plier jaws....
From Engine builder mag. website:
"The most popular materials for exhaust valves, however, are austenitic stainless steel alloys such as 21-2N and 21-4N."
http://www.enginebuildermag.com/2005/12 ... t-engines/
There are many different stainless steel alloys, for many different uses, I've seen one so soft just gripping it with a pair of pliers would mark it with the lines of the plier jaws....