Author
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Topic: Race motor update
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-22-2001 12:42 PM
I finally got the motor out of the car and apart. Lets just say its not real pretty inside. First of all, it had developed a vibration. You could tighten the valve cover bolts, run it a day, then re-tighten almost all of them the next day. Also, one side of the motor mounts, the bolts were loose, about half of the pan bolts were loose, one of the bolts in the oil pump was about finger tight, and the pickup tube was loose. It had a vibration Well, the pistons are in sad shape. When I sheared that pin on the roller cam, and the valves hit them, the exhuast valves left BIG gouges in every piston top. The intake valves were just touching the pistons again (just enuff to keep the carbon cleaned off on the edge about 1/16 of an inch around the edge of the valve) that might have been due to the 8000 rpm burnouts. Also, I have another cracked cylinder. this one is actually cracked down below where th block is filled, so it wasnt leaking hardly any water. I think when the valves hit the piston it cocked the piston in the bore causing it to crack. Plus the pistons are actually undersized for the bores (it was the only block I had to use at the time) (the biggest piston was 4.027,they were all different too, and all the bores are right at .030 over so they were loose). There are, and were when I put it together, some really ugly scratches, dents and shadows in the cylinders. And 3 of the rod bearings were into copper on the upper shell. The plan now is to use another block I had filled, with a set of new Arias domed pistons I have had for a couple of years. Use the same crank and rods but actually have it balanced this time. And then use my heads and cam in the other block that the pistons will actually fit correctly in. And to think, it went 9.97 in that shape
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SteveLaRiviere Administrator Posts: 32961 From: Saco, Maine Registered: May 99
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posted 12-22-2001 04:07 PM
Hmmm, maybe it's time to eliminate the 8000 rpm burnouts? ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open '72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok '94 F-150 XL 5.8L/E4OD/3.55 Limited Slip '97 Probe GTS 2.5L DOHC
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-22-2001 07:25 PM
You're probably right. The lack of proper valve to piston clearance coupled with 8 grand burnouts, was what was making the intakes valves touch. The crack had to be caused when the exhaust valves slammed into the piston causing an already too small piston to wobble in the bore. Those small pistons were probably the whole problem with all the cracked cylinders I had this year.
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Clevo377 Gearhead Posts: 312 From: Blackburn, Victoria, Australia Registered: Nov 2000
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posted 12-22-2001 08:14 PM
Kid, was that the engine you threw together from bits'n'pieces after your last cylinder splitting misfortune? (post from a few months ago)Paul
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-22-2001 09:13 PM
quote: Originally posted by Clevo377: Kid, was that the engine you threw together from bits'n'pieces after your last cylinder splitting misfortune? (post from a few months ago)Paul
Yes it was.
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clevelandstyle Gearhead Posts: 614 From: Connersville, IN Registered: Jul 2001
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posted 12-22-2001 10:36 PM
You seem to be a lucky boy!
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steve'66 Gearhead Posts: 6352 From: Sonoma,CA,USA Registered: Mar 2000
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posted 12-22-2001 11:38 PM
Rob,Cool story! I'm expecting mid 9's from a decent motor in your car. SteveW
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-23-2001 07:44 AM
quote: Originally posted by steve'66: Rob,Cool story! I'm expecting mid 9's from a decent motor in your car. SteveW
I would too, but I'm serioulsy thinking about try that slip n' slide powerglide again. I want to do alot more box racing. I went and ran some high dollar "box" races over thanksgiving, and got wupped bad. If you werent .510 or better, and "dead on with a..." every pass, you got the honor of going home. I never got out of the first round, and after buying back, never got past the third round. My car is pretty consistent, but having to shift twice, just leaves that much more room for error.
We'll see, I am kind of prone to changing my mind about that sort of thing a half dozen times. Rob
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Fordwiser Gearhead Posts: 213 From: Metamora, Illinois Registered: Dec 2000
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posted 12-23-2001 10:10 PM
I'll need to check, but I think I have three decent used TRW L2348 .030 If that's what you used! Maybe they'd replace your worst offenders for a spare shortblock. Roger
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ragtopjr Gearhead Posts: 2447 From: Saskatoon, Saskatchewan, Canada. Registered: Oct 2000
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posted 12-24-2001 01:36 PM
Kid with junk you were running quicker then many with high dollar engines, you have to be proud of what you did with a mismatch of used up parts This new motor should be wicked ------------------ Ed Heart mods:Trick High flow titanium valve ported & polished Listen close: "tic tic tic" No folks thats not a noisy lifter thats the sound of big flow! 1984 5.0L LX Conv 3600 lbs 13.41 at 101.89 SIR http://ragtopjr.hypermart.net/ http://ragtop-racing.stangnet.com/ http://mbmustangs.tripod.com/index.htm
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-24-2001 08:19 PM
And after further inspection today, I found that the main webbing under the #2 cap, and under the #4 cap was cracked. And the crack under the number #2 cap, started thru the main bolt hole, went clear down and under the crank, and ended at the bolt on the opposite side. Maybe that was where the vibration was coming from I think that motor was definatley a hand grenade with the pin pulled waiting to go off.
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futurattraction Gearhead Posts: 106 From: Iowa City, IA Registered: Oct 2001
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posted 12-24-2001 10:59 PM
KV, ...sounds like it was just waiting for the right opportunity to 'splode. So what's the plan for your new engine, then? I've kinda lost track of what you're going to do for next year. SP
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Dr. Who Gearhead Posts: 164 From: Redwood City, Ca. Registered: Sep 2001
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posted 12-25-2001 01:18 AM
I'll bet your happy you didn't go the whole 10% of "pop" you might have run over the crank. LOL!
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-25-2001 08:27 AM
quote: Originally posted by futurattraction: So what's the plan for your new engine, then? I've kinda lost track of what you're going to do for next year. SP
I have another block that has been filled. It needs finish bored to match the pistons. I have a new set of Arias closed chamber domed pistons I am going to hang on the ends of the rods out of this years motor, and use this years crank and actauly have this assembly balanced. I will re-use the solid Crower cam, my 4v heads, and my strip dominator. I am still debating on whether or not to buy a new set of headers, these are getting to look pretty bad and Heddman has a set with 2 1/8" primarys (I think thats the correct size) that will fit my car. I am also thinking about trying my powerglide again (but I will probably change my mind about that 3-10 times before spring anyways). I would also like to try that 2v Active intake on my 4v heads at some time to see how bad it kills/helps the power.
Lots of plans, no sure how muh will get done, but regardless, I hafta have a new block, this one is winter weight for the back of the truck now.
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Fordwiser Gearhead Posts: 213 From: Metamora, Illinois Registered: Dec 2000
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posted 12-25-2001 11:11 PM
Kid, I think Dart should give you one of those new 9.2 deck blocks, and let you do product testing for them! If it holds up to you, it'll work for anyone! :-) Good Luck Roger
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-31-2001 08:58 PM
I went to the Arias site today. Found out the pistons I am switching to are going to raise my compression from just under 11.5-1, to 12.1-1. Now if I can only retain my valve to piston clearance.
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steve'66 Gearhead Posts: 6352 From: Sonoma,CA,USA Registered: Mar 2000
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posted 12-31-2001 10:22 PM
Heck Kid,You could run 13-1 on your alkihaul. Just fly cut 'em and run low nines next year, or add a t-stop/delay box and run the 10.90 class. SteveW
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 12-31-2001 10:29 PM
quote: Originally posted by steve'66: Heck Kid,You could run 13-1 on your alkihaul. Just fly cut 'em and run low nines next year, or add a t-stop/delay box and run the 10.90 class. SteveW
I already got the delay box, just need the t-stop. If I swap heads, and use my closed chamber heads as opposed to the opens I am using now, it would bump the compression up to right at 13-1 (well, if I deck the block a little). My open heads have 67 cc chambers, my closed have 64 cc chambers. At the statt of last yr, I had almost 14-1 compression, and lots of clearance problems.
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ASTIKHOSSW Journeyman Posts: 84 From: UPLAND CA SAN BERNARDINO Registered: Sep 2000
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posted 12-31-2001 11:05 PM
KID" SORRY TO HERE YOUR PROBLEMS,BUT IS YOUR ENGINE COMBO A CLEVELAND SET UP.IF SO I HAVE A USED SET OF STROKER VENOLIA PISTON THAT ARE 4.065 WITH 1.100 COMPRESSION HEIGHT GAS PORTED WITH TWO RINGS FOR A CLOSED CHAMBER HEAD.AND I ALSO KNOW A GUY THAT HAS ONE OF THOSE FURANCE BRAZED BLOCKS THAT IS 4.100 BORE WITH THE BIG SLEEVES BRAZED IN IT.IT'S ONE OF THOSE TYPE OF BLOCK'S THE GLIDDEN'S USE TO RUN IN PRO STOCK BACK IN THE DAY.HE USE TO RUN IT IN THE OLD MODIFIED CLASS NHRA HAD.IF YOU INTERESTED LET ME KNOW.
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Moneymaker Administrator Posts: 19686 From: Lyons, IL, USA Registered: May 99
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posted 01-01-2002 01:48 AM
Maybe now that it's 2002 I can get excited about something again and give you guys/gals a 2002 MM motor update. SOme new tricks I have learned that might just surprise you all. ------------------ Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member NHRA and IHRA SS/LA National Record Holder '00, '01, & '02 Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 Moneymaker Bio US Class Nationals link
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clevelandstyle Gearhead Posts: 614 From: Connersville, IN Registered: Jul 2001
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posted 01-01-2002 02:04 AM
Yeh, Yeh, Yeh,!!!!!!
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kid vishus Gearhead Posts: 4357 From: middle of NC Registered: Oct 2000
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posted 01-01-2002 09:50 AM
quote: Originally posted by ASTIKHOSSW: KID" SORRY TO HERE YOUR PROBLEMS,BUT IS YOUR ENGINE COMBO A CLEVELAND SET UP.IF SO I HAVE A USED SET OF STROKER VENOLIA PISTON THAT ARE 4.065 WITH 1.100 COMPRESSION HEIGHT GAS PORTED WITH TWO RINGS FOR A CLOSED CHAMBER HEAD.AND I ALSO KNOW A GUY THAT HAS ONE OF THOSE FURANCE BRAZED BLOCKS THAT IS 4.100 BORE WITH THE BIG SLEEVES BRAZED IN IT.IT'S ONE OF THOSE TYPE OF BLOCK'S THE GLIDDEN'S USE TO RUN IN PRO STOCK BACK IN THE DAY.HE USE TO RUN IT IN THE OLD MODIFIED CLASS NHRA HAD.IF YOU INTERESTED LET ME KNOW.
Yes it is a cleveland combo. But unfortunately, my finances wont even allow me to think about buying something like any of what you described.
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V8 Thumper Gearhead Posts: 3366 From: Orange, Ca. United States of America Registered: Dec 2001
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posted 01-01-2002 11:31 AM
--------------------------------------------- [QUOTE]Originally posted by Moneymaker: ...new tricks I have learned that might just surprise you all. --------------------------------------------- Ok Alex, you have my attention...
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