Don't Do This Build

[OLD H2S]

Yes, This is posting. This is about the same Old Fart's '96. I am out of parts so the main build is stuck and done as of today. I blew up a piston last Monday on the 14.7CR iron block. I got my 3V WAP engine back from my buddies and put the Trick Flow 38's and a new set of .570 lift cams from Bullet Cams so I got it up and running today and all is good so far??? I am back on the dyno on Wednesday so I will post numbers when I get back. I can tell a big difference between the WAP at 10.7CR and the iron block at 14.7CR

 

[lwarrior1016]

Sorry to hear about the piston. You say big difference, is it big difference good or bad? How’s the torque feel compared to the old setup?

 

[OLD H2S]

Hot Rod Network had the answer.. I am losing 7.1% with the CR reduction but my pressure in the combustion goes from 1470 down to 1070 psi so that is the snap crackle pop you feel in the seat. Wednesday I will have new numbers to work with and then you can extrapolate upwards.

 

[OLD H2S]

Just back from a morning run after letting it sit outside all night to get cold to see how bad the cold piston slap is. Ran a new 435/5.0/Mustang, He beat me but it took him a LONG time, we were even in 5th gear,and he pulled away in 6th. I'm going to guess I am at 315RWHP. Stay tuned...

 

[lwarrior1016]

Youre thinking you picked up power, and you dropped that much compression?

 

[OLD H2S]

No, the big cams just went in last Monday for 10 miles on the iron block at 14.7CR before I destroyed it. Now the big cams are in the Aluminum block with 10.7CR so I know I am down 25HP and lots of chamber pressure.

 

[lwarrior1016]

No, the big cams just went in last Monday for 10 miles on the iron block at 14.7CR before I destroyed it. Now the big cams are in the Aluminum block with 10.7CR so I know I am down 25HP and lots of chamber pressure.

Oh. I forgot you ordered the cams. Did you notice a difference on the high compression engine when you put the cams in there?

 

[OLD H2S]

Yes, I put the car with the iron block WtoP at 10:1 so around 350 RWHP. The Porsche I was running against has a 10:1 WtoP ratio and he could not gain on me.

 

[OLD H2S]

ANDDDD the numbers are....
312RWHP 374BHP 325RWT
I will post the graph later, vid is at McNews facebook page.

 

[lwarrior1016]

Your power guess was really close! The car sounded real good in the video. Is it all turning real smooth?

 

[evilcw311]

Nice numbers


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[OLD H2S]

The engine is smooth, and they did many pulls, but... this is the aluminum WAP block and it is much louder than the iron block. There is some ticking but I can not tell if it is lifter, injector or piston slap, it is loudest inside the car?

 

[OLD H2S]

 

[evilcw311]

Good steady pull. No major spikes or lulls.




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[OLD H2S]

Thats what many pulls will get you, time to trim,trim,trim.

 

[OLD H2S]

And for Will.. the timing is 20 degrees from idle to 5k and then ends at a total of 24.5. Timing started at 28 and every time we pulled out advance we gained more power.

 

[96blak54]

Advancing the timing is a great indication of mix quality. Sounds like your tuner guy got it right

 

[OLD H2S]

They have 3 dynos, busy place.

 

[Shaggy]

No, the big cams just went in last Monday for 10 miles on the iron block at 14.7CR before I destroyed it. Now the big cams are in the Aluminum block with 10.7CR so I know I am down 25HP and lots of chamber pressure.

How did you blow out a piston? The cams were to much for the block?

 

[OLD H2S]

No, I was running 0-20 Mobile1 to clean out the remote oil cooler driving around slow and got caught up in a race with a Porsche Panamerica GTS. The oil was too thin to support the piston skirt pressure and it took out the cylinder wall.