96 Mystic Built Votech @15# stalling problems!

[SVTPete83]

Mine put down 520@6500 The b heads do like rpm! Mine turns a little less because I have a stroker crank

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[03 Red Fire]

What coil pacs are the best to use?!? stock Motorcraft or the Sreamin Demon's? I have a set of Screamon Demon's but changed to the Motorcraft stock ones because I had a miss I was chaseing down...
The miss showed up on the dyno in July when I first got the car...But I had found a ground wire going to battery that had came loose....
But now that the miss is gone!!! I was going to put the Sceamon's back in.... YES OR NO any benefits changing the Motorcrafts out?
:shrug:

 

[SVTPete83]

Everyone tells me the aftermarket coils are NOT the way to go. That being said I have had the msd's on my car for 7 years and still no probs. I ran those screaming deamin coil packs on my
Supercharged svt focus and they worked great.

 

[03 Red Fire]

That's what I thought too! I'll just keep the Motorcraft's in her...
Maybe after Winter! I'll get a RACE GAS tune and see if I can get close to 580whp?!?:burnout:

 

[Shaunk]

You need to install an msd dis4 box. The factory coil packs are the way to go. We have a few b and a c headed cars spinning well over 8,000. My stock internaled b headed car I shift or the shifts are commanded rather at 7200 rpm and has been that way for well over 15,000 miles on top of the 80,000 it already had stock!

 

[03 Red Fire]

You need to install an msd dis4 box. The factory coil packs are the way to go. We have a few b and a c headed cars spinning well over 8,000. My stock internaled b headed car I shift or the shifts are commanded rather at 7200 rpm and has been that way for well over 15,000 miles on top of the 80,000 it already had stock!

I don't have any SPARK or issues needing MSD boxes. What kind of benefit if any I don't know!:beer:

 

[Shaunk]

I had read where you were having spark blow out issues. I missed that you found a bad ground. We see issues on the 96-98 cars around 17-18 psi and above. Any way congrats on the numbers! I have personally seen and helped do a little work on that car it's a nice example of a mystic!

 

[03 Red Fire]

Hey Man thanks! It has a small blow out miss @ 6600 RPM's in 4th gear on the dyno.... But not on street in 1st 2nd and 3rd gear @ 7000 rpm's. Tuner said regap plugs from current 28 to 25 gap should fix that. But with my 373 gears I would never see over 6500 rpm's on the trac.... Plus I will NEVER trac this car....:burnout:

 

[kcobra]

My 97 Cobra with a SHM built bottom, ported heads, cams, and ported intake had the same issues. 13 psi Vortech intercooled. I had stalling issues back and forth. It was a tuning issue. I had an MSD box for ignition blow out prevention. The car was strong. 580 at 13 psi. 616 at 15 psi. The tuning was a bit trickier due to the cams.

 

[stangbanger856]

UPDATE ON STALLING ISSUE.... Took the car back to HORSEPOWER SOLUTIONS IN HAMPTON VA.

Josh data log and retuned the car with only 1 deg. more timing @ 17.5 total.... Stalling issue appears to have been solved....

And dyno #'s are @ 526.76 RWHP and 440.80 RWTQ :banana:


Plugs are gapped @ 28 now but he said after 6400 rpms the wick was being blown out. And I should regap plugs to 25.... Because the HP was still going up and should hit close to 550ish RWHP if not 540.... @ 7000 RPM's...:burnout:

Is anyone turning these 96/98 built cobra motors that high in the RPM range?!?

the car is a ROCKET....:beer:

What fuel system are you running on that? Injector size?

 

[03 Red Fire]

What plugs is everyone runnin with @ least #15's? Anyone runnin Iridium? I'm currently using TR6's... plus I have a gold handle Hurst shifter and want to change to a MGW for my Built 3550 TKO.... what's your shifter preference? :read:

 

[encasedmetal]

What plugs is everyone runnin with @ least #15's? Anyone runnin Iridium? I'm currently using TR6's... plus I have a gold handle Hurst shifter and want to change to a MGW for my Built 3550 TKO.... what's your shifter preference? :read:

Tr6 plugs are fine, mine are gapped at .26 for 23 psi. So. 28-.30 should do fine for you.

 

[highcompression]

I built this car (old car). Has a Aeromotive 340 with some S/D 60's and a BA3000, custom power pipe with a Maxflow discharged toward the blower (draw through). Tuning these 4" draw through setup's seem finicky because of such a slow air speed. Very suseptable to turbulance. I still say get a prefilter on the filter and fab up a "shroud" to help minimize MAF wash at speed. Keep working with your tuner Dean. Man, that little S trim is pumping out some numbers ! She has to light up like a Christmas tree @ 6k !

 

[03 Red Fire]

Matt, I'm going to call this week to order a pre-filter! And fab a shroud too... Still deciding on going with a MGW for shorter and cleaner shifts...

A RAPTOR shift light is on the list too...:beer:

 

[stangbanger856]

I built this car (old car). Has a Aeromotive 340 with some S/D 60's and a BA3000, custom power pipe with a Maxflow discharged toward the blower (draw through). Tuning these 4" draw through setup's seem finicky because of such a slow air speed. Very suseptable to turbulance. I still say get a prefilter on the filter and fab up a "shroud" to help minimize MAF wash at speed. Keep working with your tuner Dean. Man, that little S trim is pumping out some numbers ! She has to light up like a Christmas tree @ 6k !

A 340 intank pump is all? Stock rails and lines?

 

[03 Red Fire]

Yes! and 60lb. injectors... All good for well over 600WHP! :dw:

 

[stangbanger856]

Yes! and 60lb. injectors... All good for well over 600WHP! :dw:

Wow I was always told the stock rails become a restriction around 500whp. O well Im only at 450 so I'm ok for now anyway.

 

[03 Red Fire]

:thumbsup: