Does anybody make a 10° triple groove valve lock?
#1350135
12/12/12 12:56 PM
12/12/12 12:56 PM
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Joined: Jan 2003
Posts: 9,670 Lima, Peru
domingo
OP
EL Master
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OP
EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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For a 3/8" stem valve? Thing is these are the retainers I need to use with the cam I want: http://www.summitracing.com/parts/cca-747-16And my heads already have new std size 3/8 stem valves but they are 3ple groove. Other option would be to find a similar retainer that accepts a 7° lock and use my stock valve locks???? However I dont know if it would be adviseable to use stock 7° valve locks with a MP 284° ,528" flat tappet solid small block cam.....
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Re: Does anybody make a 10° triple groove valve lock?
[Re: JohnRR]
#1350137
12/12/12 02:11 PM
12/12/12 02:11 PM
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Joined: Feb 2007
Posts: 5,080 organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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single groove is more secure. triple groove can be improved by filing the open ends so they do not butt, but i wouldn't do that in anything other than a stock rebuild. valve train is where most engine failures start. don't skimp.
for what is the good life if not doing things thoughtfully?
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Re: Does anybody make a 10° triple groove valve lock?
[Re: Stanton]
#1350140
12/12/12 03:17 PM
12/12/12 03:17 PM
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Joined: Jan 2003
Posts: 75,050 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,050
U.S.S.A.
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Quote:
Triple grooves won't be an issue with that cam. Certainly not worth replacing all the valves and doing another valve job!
Assuming the heads are fresh the valve job would only be a matter of backcutting the valves ...
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Re: Does anybody make a 10° triple groove valve lock?
[Re: domingo]
#1350142
12/12/12 07:31 PM
12/12/12 07:31 PM
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Joined: Jan 2003
Posts: 75,050 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,050
U.S.S.A.
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Quote:
Thanks for the replies guys!
Yes, I dont want to change the valves...they are brand new and the heads are fresh.
Then just run 7* retainers and locks . You would gain flow with a better set of single groove SS valves .
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Re: Does anybody make a 10° triple groove valve lock?
[Re: JohnRR]
#1350143
12/12/12 08:09 PM
12/12/12 08:09 PM
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Joined: Jan 2003
Posts: 9,670 Lima, Peru
domingo
OP
EL Master
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OP
EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Its just a stock rebuild 340....I wanted to give it some more oomph with the cam instead of the smallish hyd thaty it had in it.
Its all new, freshly rebuilt, it just had never been fired.
I tore it apart for inspection and there were lots of things wrong with the way it was put together, luckily it was never fired up!
It had floating pins, bushings installed on the small end, but they were not clearanced enough....also, they didnt drill any lubrication holes on the rods.
They didnt change the rod bolts to ARP.
They nicked a rod journal when assembling and the crank pin was gouged BAD, and the rod bearing was junk from just having been turned over while assembling it.
It has the OLD TRW slugs but they had very tight piston to wall clearance, like if they were cast psitons!
The heads have new guides, new valves, fresh valvejob. It all looks ok and its brand new.
Bearing clearances were WAY too tight. Im going for ,0025"
etc,,,,
So its all brand new stuff, should be OK once I correct all thats wring with it....but I dont want to spend more money on it, since its all complete and its all new. I drew ther line at the cam, springs and retainer swap, and all the machine work, new rings, bearings, oil pump, gaskets, etc.
I have other engines to build to get crazy on!
I just want this one to be a nice reliable street friendly 340.6 engine.
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Re: Does anybody make a 10° triple groove valve lock?
[Re: domingo]
#1350145
12/13/12 10:51 AM
12/13/12 10:51 AM
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Joined: Jan 2003
Posts: 75,050 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,050
U.S.S.A.
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Quote:
OK Last quiestion.
I got the retainers for those springs and the 7° locks.
Now question: IS THERE ANY RISK IN USING STOCK STAMPED 3 GROOVE 7° LOCKS WITH THAT CAM AND SPRINGS?
Does anyone even make a machined 3 groove lock ?
Also with all the problems you stated above if the heads were done by the same shop are you really going to trust the FRESH valave job ?
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Re: Does anybody make a 10° triple groove valve lock?
[Re: domingo]
#1350147
12/13/12 12:13 PM
12/13/12 12:13 PM
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Joined: Oct 2005
Posts: 8,881 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,881
Ontario, Canada
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The stamped locks will be fine. Keep in mind the ribs on the lock only position the lock, it is the clamping force from the taper that does all the work. If you're really worried about it, Hughes carries 2-groove stamped, case hardened locks. They may work in the 3-groove valve. http://www.hughesengines.com/Index/produ...mp;partid=10318Its very easy to recommend the best parts when someone else is paying for them!
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