Author Topic: Utah Belly Tank  (Read 150703 times)

0 Members and 1 Guest are viewing this topic.

Offline wobblywalrus

  • Hero Member
  • *****
  • Posts: 5020
  • Age: 66
  • Location: backwoods Oregon
Re: Utah Belly Tank
« Reply #405 on: June 18, 2015, 11:43:05 PM »
It is a good idea to look at the bores with a borescope before you run the engine.  Marks in the glaze over the hone marks on the cylinder walls will show you if rings are broken.  Sometimes, if you are lucky and catch the problem early, it is possible to replace the broken parts and to hone the bores.   

Offline Elmo Rodge

  • Hero Member
  • *****
  • Posts: 1539
  • Location: Smack dab in the middle of Utah
Re: Utah Belly Tank
« Reply #406 on: June 20, 2015, 08:57:31 AM »
OK. I bought a dopey Harbor Freight leakdown tester. The instructions make no sense and neither do the numbers. That being said, I checked all the cylinders the same way and they all acted the same. Compression check showed 140 accross the board with the exception of the one (as it turns out, there is just one) oil cylinder which is 160. I think I'll pull that cylinder head and have a look.  :| Wayno

Offline Stan Back

  • Hero Member
  • *****
  • Posts: 5115
  • Location: San Berdoo
Re: Utah Belly Tank
« Reply #407 on: June 20, 2015, 09:21:12 AM »
I borrowed my buddy's SnapOn leak tester for years.  Finally got embarrassed and bought the HF piece of shitt.  The instructions made no sense and neither did the numbers.  Back to borrowing again.  I don't feel too bad -- he's driving the car.
Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club".
Celebrating 67th anniversary of racing on the salt.

Offline Stainless1

  • Administrator
  • Hero Member
  • ***
  • Posts: 7350
  • Age: 68
  • Location: Near Furley and Kechi KS
  • Robert W. P. "Stainless" Steele
Re: Utah Belly Tank
« Reply #408 on: June 20, 2015, 09:39:23 AM »
I would expect if it is not a ring problem that the oiled cylinder would have better compression... oil is a good seal... back in my tractor mechanic days that is how we sorted leaking valves from bad rings... add oil and check again.  So does that thing have valve seals?  Been a long time since I looked at the trailing edge of technology underhead valve engines.
 :cheers:
Stainless
Red Hat 228.039, 2001, 65ci, MSA Bockscar Lakester with a little N20 
MSA Bockscar Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.

Offline Elmo Rodge

  • Hero Member
  • *****
  • Posts: 1539
  • Location: Smack dab in the middle of Utah
Re: Utah Belly Tank
« Reply #409 on: June 20, 2015, 09:45:15 AM »
It has seals on the intakes. Wayno

Offline Stainless1

  • Administrator
  • Hero Member
  • ***
  • Posts: 7350
  • Age: 68
  • Location: Near Furley and Kechi KS
  • Robert W. P. "Stainless" Steele
Re: Utah Belly Tank
« Reply #410 on: June 20, 2015, 09:50:32 AM »
It has seals on the intakes. Wayno

Well sounds like 7 of them do...  :|
Stainless
Red Hat 228.039, 2001, 65ci, MSA Bockscar Lakester with a little N20 
MSA Bockscar Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.

Offline RichFox

  • Hero Member
  • *****
  • Posts: 2605
  • Location: San Mateo, Ca
Re: Utah Belly Tank
« Reply #411 on: June 20, 2015, 12:54:28 PM »
i think I see some difficulty in following those instructions.

Online 4-barrel Mike

  • Hero Member
  • *****
  • Posts: 2999
  • Age: 71
  • Location: Portland, OR
  • Any fool can drive a V8
Re: Utah Belly Tank
« Reply #412 on: June 20, 2015, 12:57:15 PM »


Rocker cover?

Mike
Mike Kelly - PROUD owner of the V4F that powered the #1931 VGC to a 82.803 mph record in 2008!

Offline Milwaukee Midget

  • Global Moderator
  • Hero Member
  • ***
  • Posts: 6477
  • Age: 59
  • Location: Beerhaven, Wisconsin
  • After further investigation, I/GT record holder
    • Milwaukee Midget Racing
Re: Utah Belly Tank
« Reply #413 on: June 20, 2015, 01:01:46 PM »
Ladies and gentlemen, my engineering consultant . . .  :-D
« Last Edit: June 20, 2015, 01:03:20 PM by Milwaukee Midget »
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

We are NOT rebuilding . . . We are reloading.

GOD SAVE MG - The Queen can take care of herself!

Offline Elmo Rodge

  • Hero Member
  • *****
  • Posts: 1539
  • Location: Smack dab in the middle of Utah
Re: Utah Belly Tank
« Reply #414 on: June 20, 2015, 01:08:02 PM »
i think I see some difficulty in following those instructions.
Rich, I have trouble following any instructions. These should prove particularly difficult.  :roll:  :-P Wayno

Offline Ron Gibson

  • Sr. Member
  • ****
  • Posts: 769
  • Age: 79
  • Location: Omaha NE
Re: Utah Belly Tank
« Reply #415 on: June 20, 2015, 02:23:24 PM »
 :-D No BOX. From MM's thread. :cheers:

Ron
Life is an abrasive. Whether you get ground away or polished to a shine depends on what you are made of.

Offline kiwi belly tank

  • Hero Member
  • *****
  • Posts: 2607
  • Age: 168
  • Location: Lava Hot Springs Idaho
Re: Utah Belly Tank
« Reply #416 on: June 20, 2015, 02:29:58 PM »
Like I said earlier, take a look at the intake port for oil trace. Some of us knew it was a flathead. :evil: Not having a big enough breather might be a problem or you could have a pan windage issue. A bad oil ring won't show up on a compression test either.
Work out how the oil is getting there, either down the port or up the bore.
  Sid.
  

Offline Elmo Rodge

  • Hero Member
  • *****
  • Posts: 1539
  • Location: Smack dab in the middle of Utah
Re: Utah Belly Tank
« Reply #417 on: June 20, 2015, 03:42:56 PM »
I've pretty much decided to pull the head and the intake. I want to run the valves anyway. They're really not bad to pull in the car.  :cheers: Wayno

Offline Jack Gifford

  • Hero Member
  • *****
  • Posts: 1314
  • Age: 79
  • Location: Phelps, NY
Re: Utah Belly Tank
« Reply #418 on: June 21, 2015, 12:32:49 AM »
Ladies and gentlemen, my engineering consultant . . .  :-D
Did that just happen? :evil:
M/T Pontiac hemi guru (or does guru status expire after 30 years?)

Offline Milwaukee Midget

  • Global Moderator
  • Hero Member
  • ***
  • Posts: 6477
  • Age: 59
  • Location: Beerhaven, Wisconsin
  • After further investigation, I/GT record holder
    • Milwaukee Midget Racing
Re: Utah Belly Tank
« Reply #419 on: June 21, 2015, 02:02:27 PM »
I'm going to cut him a little slack on this one - he's met so many folks here in the last two years with so many different projects that it's tough to keep 'em straight without a score card.

When I was about 18, two of my high school buddies, John and Tim, were working on one of John's van.  I pulled in and asked Tim if he could do me a favor and check the coolant level on my car.

He spent about 5 minutes on that Corvair . . .  :evil:
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

We are NOT rebuilding . . . We are reloading.

GOD SAVE MG - The Queen can take care of herself!