My cylinder head guy wanted to add some material to the short turn radius in all 8 intake ports. I thought I made it pretty clear that I didn't want to weld....besides he has some epoxy that is more than capable even in that area. Well he welded.....one cylinder head survived and the other opened up like a sponge.

From what I understand it is not uncommon for OEM's to seal there porous castings with a permanant process using pressure and chemicals in the water jacket....Honda does this and assume alot of others do to.

Anyway....The more we tried to seal the leaks the worse it got. When I went to LFest last year I was beating on the truck pretty good and thought I had it licked but after the second pass the cylinder head ruptured and was leaking in 6 out of 8 ports on the passenger side.

So from now on I won't even bother welding a OEM head. After market....Yes...they can take it but with stockers you have no idea what you got to work with.
Dale

 

well long story short they really did jump the gun by advertising it as early as they did. i've been playing with a few versions of there Special Forces software and i dont see anything for individual cylinder tuning. i'll see if they can offer that though the next time i talk to them. i'm waiting for the flash tuner to get here then i'm going to the dyno with the Lightning and my 05 gt.
they are trying to put together a flash tuner that will work with all processors (eec-v, spanish oak, the focus not to mention gm and chrysler pcm's using the obd2 connection) no small feet. they could have went the easy route and offer a flash tool for each processor but then what would make it so unique.

once i get a solid feel and the truck actually tuned i'll try to do a full write up on my thoughts and hopefully gains in hp/tq and et's

back to the topic,

i fried a few valves one time when my boost reference came off my fuel pressure regulator. fox lake suggested starting with new heads as its a crap shoot as to if the welding would warp it or hold up like Dale posted above. if you happen to get a new set ported you might as well send in your lower intake to have that cnc port matched as well.

 

12.12 - 12.14 @ 115/116 MPH. I've only had it down the 1320 a few times.

Didn't Sal tune your truck earlier this year? I thought i remember reading about it. Have you changed the tune since he did it? Surprising to see one of his tunes go poof on a built motor.

Just an observation I'll mention once again....21psi on pretty much the same set up is 33% more boost than i see while making about the same power. My truck made 511/578 SAE on a Mustang dyno @ 17 degrees total timing. A/F was a plump 11.4:1.

Mr. T