1.094 stroker rods / dish piston selection
#2672850
07/02/19 06:06 AM
07/02/19 06:06 AM
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Joined: Jul 2003
Posts: 5,188 upstate western ny
sogtx
OP
master
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OP
master
Joined: Jul 2003
Posts: 5,188
upstate western ny
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I have a nice set of Rods with big pins I want to build a lo compression stroker 4150 and 6760 rods Not too much on shelves for piston selection All seem to be 990 chevy size Any recommendations ?? Or past build criteria Will be iron heads So lo comp a must .. Thanks in advance
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Re: 1.094 rods / dish piston selection
[Re: sogtx]
#2672893
07/02/19 08:56 AM
07/02/19 08:56 AM
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Joined: Dec 2006
Posts: 2,136 Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,136
Byron, NY
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Pick you poison... Have pistons made to order or buy new rods...
'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: 1.094 rods / dish piston selection
[Re: lewtot184]
#2673388
07/02/19 09:47 PM
07/02/19 09:47 PM
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Joined: Jul 2003
Posts: 5,188 upstate western ny
sogtx
OP
master
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OP
master
Joined: Jul 2003
Posts: 5,188
upstate western ny
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KB251 pistons. with no major mods you can build a pump gas stroker with open chamber iron heads. play with the quench dome a little and compression can be upped. I've been thinking about doing this. Oops , did i forgot to mention stroker crank .. All searches lead to 990 chivy pins At 9.5 cr Not sure can even feasibly do 1094 pins
Last edited by sogtx; 07/03/19 05:49 AM.
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Re: 1.094 rods / dish piston selection
[Re: sogtx]
#2673484
07/03/19 07:16 AM
07/03/19 07:16 AM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
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Posts: 3,916
usa
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KB251 pistons. with no major mods you can build a pump gas stroker with open chamber iron heads. play with the quench dome a little and compression can be upped. I've been thinking about doing this. Oops , did i forgot to mention stroker crank .. All searches lead to 990 chivy pins At 9.5 cr Not sure can even feasibly do 1094 pins kb251's are for a 4.15" crank in a RB block and open chamber heads.
Last edited by lewtot184; 07/03/19 07:17 AM.
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Re: 1.094 rods / dish piston selection
[Re: sogtx]
#2674321
07/05/19 08:42 AM
07/05/19 08:42 AM
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Joined: May 2003
Posts: 6,616 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,616
Downtown Roebuck Ont
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Bush the 1.094 for a .990 pin. Would that make it top heavy ? The thicker bushing would add some grams to the small end but the .990 pin would more than make up for it. The deal breaker might be how much will it cost to have bushings made and fitted vs new .990 rods. I guess if your rods say Carillo or Oliver on them and your build is better served with a .990 pin, I'd bush them down. If they say Scat or Eagle on them, maybe not depending on machining cost. Kevin
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Re: 1.094 stroker rods / dish piston selection
[Re: 451Mopar]
#2675108
07/07/19 09:10 AM
07/07/19 09:10 AM
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Joined: May 2003
Posts: 6,616 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,616
Downtown Roebuck Ont
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Try ROSS Pistons. They made the custom dished pistons in my old 451 Stroker engine (stock 440 LY Rods.) My 493 has a set of their reverse domes. 34cc dish IIRC. .990 pin tho. They were a shelf stocking item at 440Source towards the end of Ross being the supplier there. Ross might have some. Kevin
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Re: 1.094 rods / dish piston selection
[Re: sasquatch]
#2675110
07/07/19 09:27 AM
07/07/19 09:27 AM
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Joined: May 2003
Posts: 6,616 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,616
Downtown Roebuck Ont
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Oh fiddle sticks Ok If we all agree that a 1.09 rod is lighter than the same .990 rod. Bigger hole If we all agree that a 1.09 piston is lighter than the same .990 pin piston. Bigger hole then Most .990 pins that come with shelf pistons are 2.930 long then most 1.09 pins that come with shelf pistons are 2.750 long Guess which one has less bobb weight???? Check the gram weight on the pins that come with the pistons you are ordering. Those light weight .990 pins are not CHEAP but can be had. Diamond will make any change to any shelf piston for 40 bucks. In this case a pin size change. No customs required. Todd Well when you put it that way... lol. This would also have to assume a .990 rod and a 1.09 rod use the same forging blank, agreed? Also is the OP's 1.09 rod a BBC journal or Mopar journal and would they share a common forging? In any case the $40 upcharge is the simple solution to the problem. Kevin
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Re: 1.094 rods / dish piston selection
[Re: sasquatch]
#2675848
07/09/19 06:14 AM
07/09/19 06:14 AM
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Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
master
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master
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Prospect, PA
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Oh fiddle sticks Ok If we all agree that a 1.09 rod is lighter than the same .990 rod. Bigger hole If we all agree that a 1.09 piston is lighter than the same .990 pin piston. Bigger hole then Most .990 pins that come with shelf pistons are 2.930 long then most 1.09 pins that come with shelf pistons are 2.750 long Guess which one has less bobb weight???? Check the gram weight on the pins that come with the pistons you are ordering. Those light weight .990 pins are not CHEAP but can be had. Diamond will make any change to any shelf piston for 40 bucks. In this case a pin size change. No customs required. Todd Always found it funny the weight savings some folks think they get with the 0.990" pin.
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Re: 1.094 rods / dish piston selection
[Re: BSB67]
#2675923
07/09/19 10:44 AM
07/09/19 10:44 AM
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Joined: Jan 2003
Posts: 14,531 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,531
So. Burlington, Vt.
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Like the proposed low cr iron headed stroker will even know the difference between the .990 pin vs 1.094 pin. And just to be argumentative....... JE and SRP use 2.93” long pins for both .990” and 1.094” applications....... with the 1.094’s being 20grams heavier. Icon uses a 3.00” long pin for both sizes in some BB Mopar applications. The equivalent piston is 1 gram difference for the pin bore, while the pin weight difference is 32 grams. The Eagle catalog shows the 6.760 .990 pin rods weigh 5 grams more than the 1.094 version, but the 7.100 long rod for the 2.200 journal and .990 pin is 35 grams lighter than a 6.760 x 2.500 x 1.094 rod. So, when you really care what the stuff weighs, you use the crank with the 2.200 journals, 7.100 rods(which makes the piston shorter and lighter by about 80 grams) and .990 pins.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 1.094 rods / dish piston selection
[Re: fast68plymouth]
#2676007
07/09/19 02:41 PM
07/09/19 02:41 PM
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Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
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Prospect, PA
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Like the proposed low cr iron headed stroker will even know the difference between the .990 pin vs 1.094 pin.
And just to be argumentative.......
Just need to be careful in how you choose to pick your catalog data. Catalogs are generally not a great source for this info. Using catalog info, you could also conclude that there is only a total of 5 grams difference and that's using the same length pins. But I don't necessarily believe that either. The question simply comes to this, all else being equal, do you really think that piston and rod manufacturers are actually forging and machining different pistons and rods (obviously not including the pin holes) based on a 0.990 verses a 1.094 pin? The weight of materials is well established, and the math is simple. I do agree that thinking strategically on the overall combination, coupled with shopping for the parts with an eye to parts specifications can yield meaningful weight savings.
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