Getting ready for Bonneville(rebuild)

[JAL AKA JL222]

  Good news first.... 287mph IN THE 21/4  But broke a rod and holed the block :- 280 was previous best time in the quarter so happy with 287 but should have been better. Engine was laying down after the quarter and Troy was backing off the throttle just as the rod broke.

  Not sure why, but oil pressure was dropping more than usual just before failure. Hope crank is alright and will find out after pan removal in shop.

  USFRA used previous motorcycle track with additional dragging, and we had great grip at start and throughout the run, Course was flat, a little bumpy, maybe a problem for unsprung cars but great for us.

  We had problems, 1st run, Troy took off like a bat out of hell but engine would not take throttle well in 2nd gear.
Scot Clark our tuner, found that the right-side oxygen sensor was bad [new] and computer was dumping fuel to that side. Scot enabled the ECU for left side sensor to work both sides.

2nd run Troy takes off great and blower connection inside of car blew out [ the one connection without a rod connecting both sides of pipe but using a harder and longer type of tube connecter and thinking it had no place to go and just fine at El Mirage at 252 mph we didn't use the hard connectors] We fixed it by installing 2 10 inch 3/4 in pieces of flat steel on top sides of connector. Luckly, we had extra clamps.

  3rd run 287 in 21/4, but rod broke

Great meet, 8-) no wind, cool weather, better than expected track, and cheaper hotels :lol:


                            JL222

  PS..Our fat tires showed no noticible wear

[JAL AKA JL222]

  287 in the 21/4 is great but could have been better.

   Why?... 1st 37% throttle 2nd 36% 3rd 60% 4th 100%

    Even at 37% in 1st car is accelerating to 140 mph in 10 sec, 205 mph in 16,5 sec.

    Troy was cautious about more throttle as car was accelerating better than normal for Bville and was worried about spinning the tires.

  Well...we couldn't make adjustments for more throttle for a second run as we had a major oil leak :-P

  After removing right side headers, we discovered two dime sized torched holes on bottom side. One was almost directly across from oxygen sensor. I think this happened on out 248mph run at El Mirage last May as engine not running well on next pass. Thought low voltage or bad oxygen sensors. Bought 16-volt batteries and new sensors.

Ist pass at Bville engine not taking gas, data log showed to much fuel to sensor [ no wonder]

                   JL222


                     

   

[JAL AKA JL222]

  Engine out today. Not easy, been awhile since removal, lots of interior sheet metal removal, trans disconnects starter  oil and fuel lines injector wires ground wires and getting lift cables in right spot. Oil pump just clears frame, and engine has to be in exact position. Finaly out but took longer than expected. So, no engine tear down. Block looks like an easier repair so far. Probing through hole, rod still on crank moves easily but shaft where rod broke needs work. Pan thrashed.  Tear down next weekend

                   JL222.

[JAL AKA JL222]

  After tear down found all bearings not good including mains [ that are usually OK]. #7 rod journal thrashed so looking for new crank. Possibly a Bryant crank. Oil pressure was OK most of run but dropped down to 60 lbs. in just a few seconds before rod broke. Dropping because bearings going away or not enough oil returning to dry sump? No major sleeve damage which is a first as in the past a broken rod usually damages a sleeve. 7 pistons were just fine. One cam lobe scuffed a little but hope it can be polished out as it's made of 8160 or close to that material which is super hard.

Taking the block to Hunter at J&S in a couple of weeks to repair hole in block that didn't do much damage.

                             JL222

[JAL AKA JL222]

 Found another problem #5 exhaust spring broken. Explains lope wear and engine not picking up after the 21/4.

Also found metal particles in oil pump pressure regulator. Which may be the problem of low oil pressure at end of run and being jammed from bearings going away.

                   JL222

   

 

   

[JAL AKA JL222]

  Real busy last week. 1st stop Tulare Ca and System1,machinist checked out oil pump cleaned out oil pressure adjuster valve and added new spring [ for good measure] greased up gears for new startup and no charge, Great service thanks System1: cheers:

Next, Anaheim Ca and Byrant crankshafts, ordered a 4330-billet crankshaft REM finish and 5/8 stroke. I also supplied rod, piston with rings and pin so they can balance crank to them.

Then Pomona and picked up a great KB block that JEFF STILWELL generously donated to Langlo racing.

  Thanks Jeff 

  On to J&S East Valley Garage and Hunter Self in Montecito Ca. Closed by the time we got there so spent the night
and got there the next morning. Block needs some water holes drilled to match gasket, and Hunter wants to install
and hone new sleeves.

5 hrs. later, home in Clovis foothills.

                       JL222
 
 

[JAL AKA JL222]

  At startup we have the oil pressure set at 200 psi but soon drops to 80 psi as engine and oil heats up.

  Looking for oil coolers online at Summitt Racing I found a Derale Performance fan assisted cooler that I really liked for $987 :-P

I called Derale direct and Eric said [without asking] that they were interested in sponsoring us the cooler

  They wanted fotos and info about the car and the cooler arrived yesterday

                           JL222

     

[Seldom Seen Slim]

 :clap

[JAL AKA JL222]

  At startup we have the oil pressure set at 200 psi but soon drops to 80 psi as engine and oil heats up.

  Looking for oil coolers online at Summitt Racing I found a Derale Performance fan assisted cooler that I really liked for $987 :-P

I called Derale direct and Eric said [without asking] that they were interested in sponsoring us the cooler

  They wanted fotos and info about the car and the cooler arrived yesterday

                           JL222

   

    I need a sheet of 1/4 in aluminum to mount oil cooler but arriving at foundry, where I always go, I found out they were closed and for sale Now what?

  AMAZON   Had just what I needed and came next day.

                       JL222

[tallguy]

For many years, I have found McMaster-Carr to be an excellent source of
a wide variety of things, including raw materials.  Their website is very
well-organized and user-friendly, and in my experience they have almost always
had what I wanted in stock and ready to ship quite promptly.

[JAL AKA JL222]

  We spent a lot of time fabricating the cooler mount today checking clearance, front end on, then off, on off on off.
  Front end is designed to come off fairly easy.
   Cooler is mounted on passenger side in front of tire and inside fender well.   

But plate finally trimmed and cooler secularly mounted. Cooler has a pull through fan so we had to mount it 3'' away from aluminum plate for air flow through and out to outside.

AN 12 oil lines, fan wiring, and oil temp gauge next. 

                             JL222
     

[Rex Schimmer]

John and Troy, I am assuming that you are cooling the scavenged oil coming out of your dry sump system? Might be a great time to add a return line filter also. I would suggest a Pall industrial return filter, their model 7500 would due the trick as it has a large capacity and the element is a spin on. Probably use a 6 or 10 micron rating. These are extremely efficient and will prevent contamination of your oil tank if the engine decides to "go south". They are usually available on E Bay at very discounted pricing.

Rex

[JAL AKA JL222]

John and Troy, I am assuming that you are cooling the scavenged oil coming out of your dry sump system? Might be a great time to add a return line filter also. I would suggest a Pall industrial return filter, their model 7500 would due the trick as it has a large capacity and the element is a spin on. Probably use a 6 or 10 micron rating. These are extremely efficient and will prevent contamination of your oil tank if the engine decides to "go south". They are usually available on E Bay at very discounted pricing.

Rex

  The System One oil pump we use returns the scavenged oil to a HP 6 filter then to the dry sump then oil pump sucks oil from dry sump to pressure engine. Clean oil to pump, if engine blows thrash goes to filter.

We will run that scavenged line to cooler and back to filter I was hoping to install a filter before cooler but just no room.  But just remembered a tube-shaped filter will see what i can find.

            Thanks  JL222

[deepindebt]

Petersen sells some nice in line filters, that's what we use on our return to tank.

[JAL AKA JL222]

Petersen sells some nice in line filters, that's what we use on our return to tank.

  Just ordered one from Summitt should be here tomorrow.

I forgot about these inline filters as i have used them in the past when the blowers used engine oil and I installed them on the return lines to the pan. Probably still have them in a crate somewhere but would be wrong size,


   Thanks JL222