Re: Dykes Rings question
[Re: marvo451]
#915212
01/27/11 10:07 PM
01/27/11 10:07 PM
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Joined: Dec 2006
Posts: 2,113
Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,113
Byron, NY
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This may make me seem like an A$$ but if you dont know the design properties and application uses of a Dykes ring vs. a std ring, you have no business building a Hemi. There are other aspects of Hemi assembly (set up) that need consideration that are'nt as baisic as ring type.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Dykes Rings question
[Re: Cab_Burge]
#915214
01/28/11 02:15 AM
01/28/11 02:15 AM
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Joined: Oct 2005
Posts: 290
Manitoba, Canada
liteweight
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 290
Manitoba, Canada
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If this is a cobbled together motor that he wants to run on the street, then the 11:1 on a steel headed motor is going to rattle itself to death.Between the Dykes ringlands, which should never be used for street applications, unless he wants to replace them on a regular basis, & the amount of squeeze, he's better off with a set of street slugs in the 9:5-10:1 zone. Lots of stuff on ebay if your patient.
Liteweight
Daryl
68 Hurst LO Hemi Dart
70 hemicuda 4 spd. R code owned since 76
70 GTX 4 spd. 21,000 orig. miles
55 Ford F100 chopped,slammed,bagged & supercharged
96 Ram 2500 4X4 Twin turbo'd Cummins 550hp 1200 ft. lbs tow vehicle
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Re: Dykes Rings question
[Re: cloneguy]
#915215
01/28/11 03:28 AM
01/28/11 03:28 AM
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Joined: Aug 2003
Posts: 43,190
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
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Quote:
I have a customer who has me building a hemi for the street. He has cobbled together a bunch of parts including a pretty nice set of Venolia 11:1 pistons that were made with a top grove for a Dykes 017 Ring.
I haven't been able to find the Dykes rings for less than a lot of money and the customer wants me to substitue with a standard ring.
This is just a pump gas, naturally aspirated engine. Is it possible to substitute a standard ring and if so, does anyone know what size?
Thanks,
Tim
The only way you will really know the true compression ratio of those pistons is assemble one rod and piston, stick it on the crankshaft and pour a cylinder(to figure the dome volume in CC) with the dome lower than the deck. Make sure and measure how far down on the stroke you go to to get the dome below the deck( I like and use -.050 usually  ) and then figure the volume for the stroke used to get the piston down below the deck. Subtract the actual volume from the claculted volume and that will be your dome volume  do the rst of the math to figure the true compression ratio  I have seen 10.25 to 1 comp. ratio advertised piston actually measure out to have 9.2 to 1 and some just the opposite, 10.25 to 1 be 11.7 to 1  Let us know what you decide to do, BTW welcome to the freindlly Mopar jungle 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Dykes Rings question
[Re: cloneguy]
#915217
01/28/11 01:02 PM
01/28/11 01:02 PM
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Joined: Jan 2010
Posts: 588
Franklin, TN
23T Hemmee
mopar
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mopar
Joined: Jan 2010
Posts: 588
Franklin, TN
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A point to consider, if these pistons have an .017 top ring, then they are more than likely a blown alky piston. The old NASCAR, Pro Stock and most custom N/A pistons used the .031 dykes which were available in double moly versions. I've only seen the .017 in stainless and tool steel but a moly version may be available. The blower piston has a full skirt which would lend itself well to street use and there is enough meat in the dome to lathe it down to get whatever compression you wanted and still have a decent piston crown. Yes, the dykes is not the optimum for street use but unless you're building a 100,000 mile engine, you can definitely get a couple of years of use out of them, depending on whether your customer wants the build for occasional use or a daily driver. The costs of sending the pistons back to Venolia to have the lands recut would probably be more than the increased cost of the rings, and unless things have changed drastically, their customer service for jobs like this is in the "zip" "nada" range. Just my personal experience, I'm sure others speak glowingly of them...... 
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Re: Dykes Rings question
[Re: marvo451]
#915219
01/28/11 03:30 PM
01/28/11 03:30 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Quote:
Also, you can't substitute another ring without re-machining the piston ring grooves. A Dykes ring is "L" shaped.
Yep,
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Re: Dykes Rings question
[Re: BeEtLeJuIcE !]
#915221
01/28/11 10:07 PM
01/28/11 10:07 PM
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Joined: Nov 2009
Posts: 255
michigan
sturmenater
enthusiast
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enthusiast
Joined: Nov 2009
Posts: 255
michigan
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Quote:
Quite frankly ...I like dykes rings. The first aftermarket-piston motor I ever build had those rings ....
That thing ran BIG MPH ...for what is was .... a small Racer Brown cam, JUNK heads, spinning the tires - through the muffs ... 11.86 ...119.90 mph.
I tried to like dykes too but they never liked me back said they only liked other women
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Re: Dykes Rings question
[Re: RUNCHARGER]
#915222
01/28/11 10:27 PM
01/28/11 10:27 PM
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Joined: Jul 2008
Posts: 30,430
Florida STAYcation
BeEtLeJuIcE !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,430
Florida STAYcation
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Quote:
I put about 50,000 street miles on a couple of dykes equipped Hemis between 1980 and 2005. They are not unstreetable at all. The engines put out excellent power and didn't noticeably smoke. I would run them again in a heartbeat. How many miles is the customer going to put on this engine 100,000? I personally think proper valveseals and guide clearance is more of an issue than running dykes rings on a Street Hemi.
Sheldon
Did you ever check to see hom much the ring-end-gap grew?
I got a puff-O-smoke as I hit the throttle .. but then it was as clean as a
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Re: Dykes Rings question
[Re: sturmenater]
#915223
01/28/11 10:34 PM
01/28/11 10:34 PM
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Joined: Jul 2008
Posts: 30,430
Florida STAYcation
BeEtLeJuIcE !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,430
Florida STAYcation
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Quote:
I tried to like dykes too but they never liked me back said they only liked other women
ONLY a twisted-guy would have picked-up on something like that ! 
WHAT you have to get THEN is some LIPstick to put on those rings .. to make them more attractive ! 
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Re: Dykes Rings question
[Re: W.I.N. Racing]
#915224
02/02/11 06:40 PM
02/02/11 06:40 PM
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Joined: Apr 2003
Posts: 1,054
Roswell, GA - near Atlanta
cloneguy
OP
super street
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OP
super street
Joined: Apr 2003
Posts: 1,054
Roswell, GA - near Atlanta
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Quote:
This may make me seem like an A$$ but if you dont know the design properties and application uses of a Dykes ring vs. a std ring, you have no business building a Hemi. There are other aspects of Hemi assembly (set up) that need consideration that are'nt as baisic as ring type.
Thanks to everyone for the information. And, I don't think you are an A$$ any more than anyone else from NY.
For the record, I've built quite a few engines in my 30 year career although pretty much all for the street. They include the 1,000 HP, blown, 572 inch, BME aluminum rod, pump gas street hemi in the streetrod in my icon (this will give people a chance to talk about how you can't use aluminum rods on the street) and a 900 HP, 572 inch, 12.5:1, pump gas street hemi with a proprietary cam grind (this is so you can talk about how you can't use high compression with pump gas). None of the others are as interesting although I do have a 1,000 hp twin turbo injected SB Chivy engine in the hopper.
But alas, I had never seen or heard of Dykes rings. It seems I learn something new every day.
And, I'm going to go the route of having the pistons recut.
Thank you all very much! 
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