Last edited by Wobble; 07-28-2009 at 08:59 PM.
These motors were dynoed on a 50-50 mix of water and methanol.I have read the feb 27 email the engine builder (Larry)sent you and it specifally said you were responsible to run the correct mixture and to turn on the switch which you were responsible to program to turm on at 6 psi of boost.
The part you left of in your post is that you admitted to screwing up to several people and trying to save the meth (with no water mixed in)so you could run another skater at the kentucky poker run.You did 3 things wrong-#1 you forgot that cruising at 90 with 6 people and a full load of pump gas,even if you say it was 5 psi will spike up to as much as 10 psi when you make slight turns .Remember i had the exact same bottom on the old predator and the boat is stuck in the water ploying and loading the motors at 90-it doesnt break loose till 100 mph.#2-you were conserving your methanol and did not turn the switch on.#3 straight methanol will lean out the motor (especially when it was tuned on a 50-50 mix of water) and raise the exhaust temps.
The heads left larrys shop at 98 cc which coupled with the 40 cc dished pistons and the thickness ot the head gaskets gave it a 8.8 compression.The detonation that happened to your pistons also hurt the heads.The shop you sent them to welded them up then milled them 18 thousands-they just were not instructed by you to open up the chambers-which you can still do.The heads now are at 95 cc.
Never ever did larry ever talk to you about providing you free parts.On july 24 when they called you about paying the bill,your excuse was that your wife was out of town and would handel it when she gets back-no surprise out of your lips-just excuses.
You have had i shop hone the block,another fix the heads,another do the assembly and another order the parts.
You are right about one thing thou-your boating season is over and you are soley at fault.
We owned a certified Mercury Marine Racing Dealer and where we are located now we do a lot of stock car motors and GEE WIZZ Our Name is Ozark Speed and Marine???? We do way more boats than cars!!!
Sorry Bill Small hijack had to respond to jibber like that
Call me at the shop in am.
Back to the program
Do not assume the smaller jets are the issue. You are using methanol injection which requires smaller jets. I had to go down 10 jet sizes to get the EGT and O2 even close to normal when the meth kicked in. I also run 32 degrees timing and also have a 16:71 blower. I would lean towards the higher compression problem and running the engine at 4000 rpm for an extended period of time. That is the lean spot for me also as it just before the meth comes on. The engines have no load cruising at 90 mph as I am running less than 1/2 throttle causing the engines to go lean as the hull is aired out. I tend to up and down in speed rather than stay at one constant lean spot. I am really sorry to hear of your boat issues this year.
That really sux Big Daddy!!! Hope you get it straightened out and salvage part of your summer.
And just for the record is is it so wrong to have awell known head guy (Jim Valako) repair the heads ,and a machine shop hone the blocks, and a shop of my choice assemble the motors ???? OK Your right buckwheat I would want my concrete man to hang my 60 k Cherry Cabinets in my Kitchen
I knew the LARRYS ENGINE & MARINE cheerleader would show up
Last edited by RunninHotRacing163.1; 07-29-2009 at 10:25 AM. Reason: pic download
But did you ever think that it could be the other way around a shop does both and dosent want to exclude any clients so have both in the name. Food for thought. that's why we named it that way.
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