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Suggest a cam for 93 RX7

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Old 06-26-2015, 06:20 PM
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FWIW I talked to Martin a couple of months ago, the cam he spec'd me was a 227/231 on a 114, pretty sure it was lsl lobes as well. My car is also a pure DD rain or shine, and weighs in under 3100 pounds.
Old 06-26-2015, 08:31 PM
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Originally Posted by squalor
It sounds a lot like your cam. Your thinking about changing, what's your favorite spec for your application ?
Mine is messed up. I'm going with a cam that is an average of the Titan 4 and tick SNS2. 227/236 112+3. 610 lift. The cam that came out is 9 degrees off. The reason I posted that stage 4 was the lower lift. Personally I think a Titan 4 would be great for you, but for the lift.
Old 06-26-2015, 08:32 PM
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Originally Posted by whatsa347
FWIW I talked to Martin a couple of months ago, the cam he spec'd me was a 227/231 on a 114, pretty sure it was lsl lobes as well. My car is also a pure DD rain or shine, and weighs in under 3100 pounds.
Is the LSL gentler than the XER? 51 vs 49 ramp rate? Or is the LSL the 47 ramp rate?
Old 06-26-2015, 09:08 PM
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LSL is 50/76 up to 227 , 229 and up is 50/77 but they were developed with a spintron to maintain lifter wheel contact at higher rpm.
I'm thinking of getting some SVO 30# ev1 injectors, what do you think ?
Old 06-26-2015, 09:17 PM
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Originally Posted by squalor
LSL is 50/76 up to 227 , 229 and up is 50/77 but they were developed with a spintron to maintain lifter wheel contact at higher rpm. I'm thinking of getting some SVO 30# ev1 injectors, what do you think ?
The easiest ones to tune are the 36# GTP injectors. They have the most heavily posted data available. 30 is probably plenty for you if you've already got a line on them. Stock LS is 28 so it isn't much of an upgrade to 30
Old 06-26-2015, 09:39 PM
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I got a set of ls3's with adapters from FIC. Spent like $150 on injectors total and tunes like a stock car.
Old 06-26-2015, 10:15 PM
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-2 44 53 -1
LSL XE
Old 06-26-2015, 10:24 PM
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Default Suggest a cam for 93 RX7

Have fun with the beehives. There's no way in HELL I'd ever run them in a cammed application. Does that mean it "can't" be done? No. Not at all. But I'd prefer the extra insurance and the "oh **** I missed a shift" factor reliability of duals (BTR Platinums)

I still vote SSHT.... Again, my personal opinion.
Old 06-29-2015, 11:52 AM
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Originally Posted by A.R. Shale Targa
-2 44 53 -1
LSL XE
222/232 115+2 and -3 overlap. No fuel smell, no lope or chop ? The center of the overlap is 1 degree after TDC. There is alot I like about those numbers.

So I count 2 votes smaller and 5 votes bigger.
In the Ed Curtis HT, they don't list the advance. Is it +3 ? Does anyone lnow the advance of the EPS Truck Torque 3 ?

I have another requirement for my cam choice. I'm willing to check spring pressure every 15k but I want my PSI beehives to last about 50K.
Have fun with the beehives. There's no way in HELL I'd ever run them in a cammed application. Does that mean it "can't" be done? No. Not at all. But I'd prefer the extra insurance and the "oh **** I missed a shift" factor reliability of duals (BTR Platinums)
I have read the horror threads about PAC beehives and the 228r. I know the BTR platinums have never had a documented failure. The PSI LS1511ml that I bought also have never had a documented failure. The open pressures are about the same.
Old 06-29-2015, 12:04 PM
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Originally Posted by squalor
222/232 115+2 and -3 overlap. No fuel smell, no lope or chop ? The center of the overlap is 1 degree after TDC. There is alot I like about those numbers.

So I count 2 votes smaller and 5 votes bigger.
In the Ed Curtis HT, they don't list the advance. Is it +3 ? Does anyone lnow the advance of the EPS Truck Torque 3 ?

I have another requirement for my cam choice. I'm willing to check spring pressure every 15k but I want my PSI beehives to last about 50K.

I have read the horror threads about PAC beehives and the 228r. I know the BTR platinums have never had a documented failure. The PSI LS1511ml that I bought also have never had a documented failure. The open pressures are about the same.
You definitely need to be talking to cam motion or EPS if that's what you want. to me, that truck torque cam looks pretty good. though, you've said you don't want a choppy idle, and 5 degrees overlap will definitely chop. .609 lift could be problematic for 50K miles on beehives.

I'm with the Dr on this one. I've got comp 918's in now, but I'm pulling the heads in a few weeks, and the new ones are fit with platinum duals - just for insurance
Old 06-29-2015, 01:50 PM
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I bought 1511 singles I'm not going to sell a box of NEW psi's so I can go buy heavy BTR's . I have LS6 hollow valves. Putting a dual spring and heavy retainers on them defeats the purpose.
I like the new avatar Darth !
Old 06-29-2015, 04:52 PM
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Originally Posted by squalor
I bought 1511 singles I'm not going to sell a box of NEW psi's so I can go buy heavy BTR's . I have LS6 hollow valves. Putting a dual spring and heavy retainers on them defeats the purpose.
I like the new avatar Darth !
Thanks! No, I get it about the springs. What I tried to say very poorly was the lift on the truck torque 3 will probably not be conducive to 50K on a set of beehives. If you want to go beehives, your instinct to stay .580 is spot on.
Old 06-29-2015, 06:28 PM
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Originally Posted by squalor
The center of the overlap is 1 degree after TDC.
Until the T chain does it's thing......BINGO



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