Blown Motor

[SVTdubs]

What is up with 2 whipple cars and 2 blown motors?

Kosher Cobra and now mjchip have both blown their motors with the whipple blower below 18psi.

Interesting isnt it?

Click to read more...

 

[Wiked03]

Yikes, that can't be good for whipple! Maybe it is coincidence?

You hearing this Tim?

 

[hj16]

When did Marks blow? Im shocked


EDIT: Just saw it...Im still in shock. At least his didnt gernade, he can still drive it around.

 

[Flatliner]

Wow... that is scary will have to find thread to read on and see what happened...

 

[wtw5974]

I cannot make a judgment yet. How many blown motors happened when KB was doing their testing? The chances of theses cars motors going are high just because of the fact that they are R&D vehicles. Then there is the fact that these cars were modded before the testing as well. So, you must factor all that in. It is too realy to tell. The product is not out yet and is still in the R&D phase.


Cheers :beer:
Tim

 

[Flyn]

It will be interesting to see what A/F numbers they were running. I think that running the engines lean is the quick path to destruction. The Whipples aren't running any more hp than the Kenne Bells are so my guess would be the tunes are leaning up somewhere.

 

[Dana]

With Mark's motor, not sure yet about the other Whipple one, the weak spot is showing up. Pistons.
The pistons are the weak link in the motor, and pushing them as far beyond the stock levels that many have, Mark included, will cause them to fail eventually.

At the stock levels, they would probably live a long life, but that is at stock levels.

Everyone that is pushing the envelope on these motors should prepare themselves for an engine rebuild in the near future.

I wouldn't mind, but these motors are such a pain in the ass to pull, I am not looking forward to it.
Maybe after I can set up shop somewhere, I will feel better about it.

Dana

 

[hj16]

Everyone that is pushing the envelope on these motors should prepare themselves for an engine rebuild in the near future.

Mmmm, stroker :headbang:

 

[Robertson Racin]

Remember, there is one running around St. L. without any problems... There is to many questions that need asked.. He said he has been lean on the top end, why would he drag race it knowing that?? also, did he have a cooling mod?? It was also self tuned... I would like to know how many motors Strickley, JDM have had problems with...

 

[Flatliner]

Any piston will crash and burn in a lean condition... let's let the guys with disposable income learn first so we can learn from their mistakes.

That being said... ChicagoSVT.com crew rocks!!!

 

[Dana]

Mark is pretty much a perfectionist. I can't believe he'd let a lean condition exist for any significant amount of time.

He's pretty careful tuning it.

And yes, any piston will melt under lean conditions, but the issue on the Ford pistons is the skirts, and wall clearances. And premature failures.


Dan

 

[Flyn]

Do the Whipples produce more hp at the upper end than the KBs? Or are the KBs breaking the pistons, also? I don't understand the reason behind the 2 for 2 Whipple failures, yet. What about when the KBs were new? Did they go through engines during testing?

 

[Flatliner]

skirts, and wall clearances. And premature failures.

I think Dan says it all with this...
but at the same time, it's one of those things, that you would like to think Ford threw in the quality stuff, but everything has specs... and when you are talking about that much hp, they obviously underestimated what specs they needed. Anybody know the difference between our pistons and the 2000 CobraR's?? I'd be curious to see what they used in there for comparison...

 

[Dana]

I don't know how true the following tidbit is, but I read it on the internet so it MUST be true, right?

Ford ended up with a bunch of slightly undersized pistons for these motors and instead of scrapping them, had them coated with something to take up the extra clearance. One possible reason for the piston slap and premature failure of the skirts.

Take this for what it's worth...

Dan

 

[Flatliner]

Well you know they say don't look back only look forward on different aspects of life..? So you would hope with Ford, but we know that they... have a tendency to repeat little annoyances that makes your post believable Dana.

Case in Point with our cars:
Hood not painted completeley
Rear end bolts smaller than were supposed to be
I am sure there is more, so I would not doubt that they took pistons off the shelf to help reduce cost and get rid of what they have to replace the new parts for the new generation motors...

 

[Flyn]

Don't forget the poor tolerances with the stock half shafts. Ford doesn't seem to be worried, or doing anything, about them. Too bad Ford won't let you pay more money and have your car built the way you want--the way the '60s muscle cars could be optioned with many choices.