flying low's motor!

kyle's srt10 said:
# 8 doesn't look so good:dontknow:
Click to expand...

I think #8 is on the other side of the engine. :confused: :) #3 is the bad one. :nurse:
 
1,3,5,7,(Can't see 9) from left to right. 1 doesn't look great either at least to my untrained eye. Thanks Chub for posting.
 
Isn't 3 always the one that takes the hit?


Maybe I hogans intake will more evenly distribute the air and not go lean like that.
 
Hello Scott.

Forged parts would not have prevented what happened to the motor. It may have delayed it, but not stopped it. You need to address the condition that caused this to happen.

The spike in boost results in a lean condition and hence detonation. Even with forged pistions they will take a beating and fail eventually. But lets forget about the pistons.

Let's say you have forged rods and a spendy forged crank. The rod bearings are pretty much the same bearings regardless. With detonation those bearings see this shock load and they will fail also.

Unless you can correct the conditions caused by the STS, you will distroy a forged componet motor also. It just may take longer.

Remember what Phil went through. Phil is an old time gearhead and used nothing but the best components to rebuild his motor, and it still failed again.

And our good buddy Hennessey even mentioned that there is an oiling problem with the #3 rod journal. Forged parts will not address that either.

You have been here long enough to know what's next, but I will say it anyway. Figure out what you want in the end, and then plan what is needed to support that end outcome. If you have to do it in stages, then plan accordingly so that you do not spend money on something, only to remove it later.

Best of luck to you no matter what you decide to do.

Take care.
 
bigike said:
Maybe I hogans intake will more evenly distribute the air and not go lean like that.
Click to expand...

Well I'm certainly hoping that will help me.;)

You certainly can see on 1 and 3 that they're a nice tan color.:(

Whatever you choose to do, make sure that you have the oil pump mod done to increase pressure (not volume). Good block and bearing prep, and coated bearings will also bode well for engine longevity.
 
Dumb Question but I Don't Know?

I am going to be pulling my heads in about a month. I think my #3 may have some aluminum on the piston also????? If it does (I am all NA) what needs to be done. I can't afford a complete rebuild or all new pistons and rods.

Could this be covered under warranty with my mods. Headers go on with the heads I have listed in my sig. If not what is the bare minimumn that must be done?

The only cause I think of also is hitting the rev limiter with the SCT tune? :dontknow:

Thanks for any help and advice!
 
rreinicherr said:
I am going to be pulling my heads in about a month. I think my #3 may have some aluminum on the piston also????? If it does (I am all NA) what needs to be done. I can't afford a complete rebuild or all new pistons and rods.

Could this be covered under warranty with my mods. Headers go on with the heads I have listed in my sig. If not what is the bare minimumn that must be done?

The only cause I think of also is hitting the rev limiter with the SCT tune? :dontknow:

Thanks for any help and advice!
Click to expand...
Why do you think you have piston problems?
 
Silver,
I don't know what a piston looks like that has had detonation. But to me the #3 just looks like it got hit with the piston ring that broke and did not detonate. We are sending the turbo and waste-gates back to STS for inspection to see why the waste-gates are not working properly. Part of the reason we think is that the boost is referenced at the brake booster line at the front of the engine. The boost line then runs the 10 feet or so all the way back to the back tire. Marty who has his STS running nicely is getting his boost right off of the turbo (8 inches vice 10 feet.) I think that is creating a lag with the waste-gates.
 
FlyingLow said:
Silver,
I don't know what a piston looks like that has had detonation. But to me the #3 just looks like it got hit with the piston ring that broke and did not detonate. We are sending the turbo and waste-gates back to STS for inspection to see why the waste-gates are not working properly. Part of the reason we think is that the boost is referenced at the brake booster line at the front of the engine. The boost line then runs the 10 feet or so all the way back to the back tire. Marty who has his STS running nicely is getting his boost right off of the turbo (8 inches vice 10 feet.) I think that is creating a lag with the waste-gates.
Click to expand...

Detonation will cause the piston to fail in it's weakest spot, and that generally is above the ring lands. It appears to me that your piston failed due to detonation.
 
I found out the hard way, that if you go lean at all when under boost the engine gets damaged. And yes it was expensive, the good news is it wasn't my SRT-10.

Bill.
 
Detonation cause the piston to fail..........................

Copy Marty's setup to the T and get that thing to the track!

What about a better manifold??????????
 
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