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Posting for LUV MY RT....hurt motor last Saturday

15759 Views 130 Replies 32 Participants Last post by  chris1992
LUV MY RT asked me to post this for him since I'm on the forum a lot more than he is.

LUV MY RT from the forum and I are good friends. He's local and we go to the track together. Those of you at ChallengerFest last year will remember him and his wife having the black R/T with the Vortech supercharger.

Last Saturday we went to Beech Bend to run a few passes.

We both slapped on our M&H DRs and he's first to go down the track. He ran a personal best of 12.42 at 110.64. He's got the Vortech setup on his 09' Challenger R/T Auto and was running stock Vortech boost which I believe is 6.5psi and he's running the the Boost A Pump. The temps at the track were in the high 60s and he was running high octane Sunoco fuel. The car was custom tuned, but I'll let him go in to that if he wants.

I didn't see him pull back around after his run so I go to our pit area to check on him. He's sitting in the car with it idling and tells me it feels like it has a miss. I listen to the exhaust and it sounds OK, but the engine was jumping around like he had a big lopey cam in it. NO check engine lights though. Weird.

I figure he's spun the crank pulley and gotten something off balance. We give GSO a call for a 2nd opinion and he asks a few questions and says it might be a broken motor mount since there were no CELs.

The car gets him 120 miles home....still no CEL, but its running pretty rough by the time he gets in the driveway. No smoke or anything outta the exhaust.

He pulls all the plugs and finds one of the plugs in cyl 7 has a bent electrode. The plugs in cyl 1 are fouled. The rest of the plugs look good.

He does a compression check and starts with cyl 7 since it had the bent electrode plug. It reads fine. He calls me and we think he's dodged a bullet. He goes ahead and checks the compression on the rest of the cylinders just to be sure and finds the compression in cyl 1 is way way low.

Crap! He does a wet compression check to see if it's a piston or a valve....turns out it's a piston as when he added a bit of oil to the cylinder the compression came right up.

He's looking at options now and will be coming up with a plan to get back up and running. We're hoping he can still make ChallengerFest2 but things aren't looking good at this point.

I'm sure Greg will post in to this thread when he has time to get on the computer, but he wanted me to give you guys a heads up.
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FWIW I've been running 8 psi. on a Vortech with a good, SAFE custom tune for a while with no issues.
A lot comes into play on any SC'd engine with custom tuning but most of the issues I've seen with popped motors are either too much timing or too lean of a tune.
This car is now in the loving hands of Arrington Engines (ShopHemi.com). Should get interesting now.
Staying with the vortech?
Congrats Greg on getting her motor done looking forward to your updates :guiness:
I cant stress an A/F gauge enough. Log, and learn what it means. I didnt like the Hobbs switch that came with it. Non adjustable. Factory set at ???ahh, mine didnt close until I had 20psi on it. (with a compressor 220volt) Get an adjustable. Set the presure on Hobbs on the bench. I liked mine at 2 1/4lbs to spool up to 17v waiting until it hits 5 or 6lbs before spooling up,,,no good,, Leaned mine out too fast. I first tryed 1.5lbs but after burn out it loaded up just a touch. So 2.25 let me get to 11.4 fast. At WOT.. JMHO Some say canned tunes are fat,,, mine, canned Vtech tune was extra Lean. Again anyone SC and no gauge, Get One,, good luck..
FT
So is there any news as to what the actual failure was?? Pretty easy to determine once the engine is torn down, parts can be tested/inspected, so on and so forth.
I'd be curious to know as well. I'm also curious whose tune it was?
Hopefully Greg will come in and update, but I know he's working like 65 hours a week so his time on the forums is limited.

I'll try to give him a call later today to catch up and get some updates.

Arrington will let him know what failed and do some analysis I think on the motor to see what happened.
What is a Vortech's V-3 good, Safe custom tune with a stock motor in RWHP and torque? I thought it was less than 500, 6# boost and streetable.

FWIW I've been running 8 psi. on a Vortech with a good, SAFE custom tune for a while with no issues.
A lot comes into play on any SC'd engine with custom tuning but most of the issues I've seen with popped motors are either too much timing or too lean of a tune.
6psi would generally be good for 110-120rwhp so just add to what you have now. A custom tune from a reputable tuner is recommended.

HemiSam
I do have this question as I have seen this pop up a couple of times.

The Vortech 5.7L Challenger kits ship with an 8lb pulley (just like the 6.1L kits do). But I see people with Vortech's on their 5.7L with 6 lb pullies...are you guys buying 6lb pullies with your kits? Or is it thrown in when you purchase the kits?

The 06-08 5.7L cars came with the 6lb pulley so it always made me wonder if people were buying the 6 lb pulley (with their 5.7L Challenger Kit) and then seeing the numbers after the custom tune that were pretty close to the 8lb numbers made me also wonder lol
Mikey, what dia. is the 6lb pulley and dia. of the 8lb pulley ? Mine came I guess with the 6lb pulley. When I was on a dyno for a base, I and had 6lbs boost. I did put down 491hp at 5400 rpm. Stock canned Vtech tune on the 5.7 auto. With Not much timing either.
I now have no trouble with the KB bap. I do use 12ga wire and wire dont overheat as others have, dunno, mine works.
FlatTop
Mikey, what dia. is the 6lb pulley and dia. of the 8lb pulley ? Mine came I guess with the 6lb pulley. When I was on a dyno for a base, I and had 6lbs boost. I did put down 491hp at 5400 rpm. Stock canned Vtech tune on the 5.7 auto. With Not much timing either.
I now have no trouble with the KB bap. I do use 12ga wire and wire dont overheat as others have, dunno, mine works.
FlatTop
In the Challenger kits they come with the 30T Pulley (Same one that the SRT8 cars come with)

In the 06-08 Vortech 5.7L kits it came with a 34T Pulley.

When you say stock Vortech Tune......that is interesting to hear as Vortech does not have tunes for the Challenger Kits - either 6 speed or Auto. When we sell Vortech kits we get with another tuner who we are very confident of his abilities (and he has done many of these kits for us) to write a custom email tune for the customer.

Now if what you purchased was the Tuner Kit, you probably got the 34T pulley...but the tuner kit does not come with tuning or any fuel upgrades.
Anyone know which brand of BAP he was running?
Yes I stand corrected. No Vortech tune. I did buy the system with the fuel upgrades. I had a tune sent in the preditor. That I had deleted so the tune was emailed and I loaded into my Trinity. So term (vortech canned tune) is wrong. Mikey right.
FlatTop
Yes I stand corrected. No Vortech tune. I did buy the system with the fuel upgrades. I had a tune sent in the preditor. That I had deleted so the tune was emailed and I loaded into my Trinity. So term (vortech canned tune) is wrong. Mikey right.
FlatTop
You were sent a Predator with a Tune on it that you deleted?

When we sell the Challenger Vortech Kits we sell them without the Predator, so it is cheaper on the consumer since they will need a tune anyway and most people already have a Predator or Trinity when purchasing a Supercharger.

Vortech has actually told us they will not send out a full kit (including Predator) because they don't have a tune for it. So this is all interesting to hear.
Anyone know which brand of BAP he was running?
If it was the one from the Vortech Kit it would be the MSD. All Challenger Complete kits ship with the MSD. If he got a Tuner kit it would have been up to him which one to run.
If it was the one from the Vortech Kit it would be the MSD. All Challenger Complete kits ship with the MSD. If he got a Tuner kit it would have been up to him which one to run.
The BAP was a Kenne Bell & I was not given a choice on BAPs. I would also like to say I paid DCX extra money to wire the BAP into my fuse box for safety reasons. I think some people that have commented on this post thinks the BAP may have been the problem. I disagree.The BAP was wired to come on when you turned the key on once energized it was on all the time. It either worked or it did not no in between. So when I had the problem with the 2 fuses that blew the car was not running. It shut the motor off once it blew the fuse. Just needed to clear that up about the BAP. Arrington is building me a 392 stroker motor to go in my car. Once they get the old motor out & torn down I will know more about what happened. I will post up information after I get it from Arrington.
The BAP was a Kenne Bell & I was not given a choice on BAPs. I would also like to say I paid DCX extra money to wire the BAP into my fuse box for safety reasons. I think some people that have commented on this post thinks the BAP may have been the problem. I disagree.The BAP was wired to come on when you turned the key on once energized it was on all the time. It either worked or it did not no in between. So when I had the problem with the 2 fuses that blew the car was not running. It shut the motor off once it blew the fuse. Just needed to clear that up about the BAP. Arrington is building me a 392 stroker motor to go in my car. Once they get the old motor out & torn down I will know more about what happened. I will post up information after I get it from Arrington.
Good to know. It sounds to me (And I apologize if I am off base here) that what you got is not a straight up Vortech Kit. Looks to be like it was a kit put together.

Vortech only supplies MSD BAPs in their complete kits (Whether it is a SRT8 vehicle or a 5.7L Challenger).

Not saying what you had/have is a bad thing...just not a straight Vortech kit.

Here is the one supplied on the 5.7L Challenger Vortech Kits from Vortech:
5A002-023 VOLTAGE BOOSTER, G2 MSD PROG 1

Having said that, Happy to hear you are moving forward. You will love that Arrington 392!!!
Good to know. It sounds to me (And I apologize if I am off base here) that what you got is not a straight up Vortech Kit. Looks to be like it was a kit put together.

Vortech only supplies MSD BAPs in their complete kits (Whether it is a SRT8 vehicle or a 5.7L Challenger).

Not saying what you had/have is a bad thing...just not a straight Vortech kit.

Here is the one supplied on the 5.7L Challenger Vortech Kits from Vortech:
5A002-023 VOLTAGE BOOSTER, G2 MSD PROG 1

Having said that, Happy to hear you are moving forward. You will love that Arrington 392!!!
When I purchased the SC Tim told me it was a tuner kit & they would have to do the tuning on the car.
Did your kenne Bell bap have a boost switch wired in?I have the kenne bell bap and it's wired through a relay and have a 3psi boost switch to activate.
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