8V71 New Engine Issues

Geoff · August 15, 2018, 06:27:22 PM

Quote from: luvrbus on August 15, 2018, 04:01:45 PM
LOL those are large stamped numbers Geoff ,people can screw one up I have one the rebuilder left the plugs out of the roots and used a soft hollow roll pins to pin it with it swelled up so much I can not get the roots out of the case

I have to see that one!! I have rebuilt blowers that lost a bearing and the lobes were beat to (almost) death.

zimmysurprise · November 28, 2018, 02:57:32 PM

An update on the 8V71. After researching other threads about how to pull the monster, I went to my local industrial supply store and picked up a cart I thought would be heavy duty enough to hold the cradle and contents for 99 bucks. I did a little welding on it to change the wheel direction, then added (4) 7/8" bolts and U-channels to lift the engine close to it's engine mounts.

zimmysurprise · November 28, 2018, 03:04:28 PM

I threaded up my bolts to take some weight off the mounts and unbolted it. The exhaust clamps gave me the worst trouble, as well as the grounding strap. (I have no idea how anyone could get to it). I ended up cutting it and will relocate it when it goes back in. I was by myself so I put a ratchet strap from my truck bumper to the cart to keep some pressure on it while I watched all the lines, wires and hoses. Came out like a champ. My wife showed up just in time to snap a picture. Total time from hood up to on the trailer (including building the cart)- 16 hours.

I used chain binders to strap it to the cart, then used my lift to set it on the car trailer. The original plan was to take the whole bus to the mechanic but I was afraid it might be buried in there forever. The cradle rode the 5 miles on the trailer.

zimmysurprise · November 28, 2018, 03:06:55 PM

5 hours at the mechanic's and the problem done showed itself...

ding ding ding-

wildbob24 · November 28, 2018, 03:35:13 PM

Looks like Clifford called it😎

Bob

chessie4905 · November 28, 2018, 05:58:19 PM

I see you have the buried muffler.... Make darn sure it is in good condition. There have been occasional issues of fires from a rotted out muffler.

zimmysurprise · November 28, 2018, 06:31:20 PM

Clifford did hit in on the head. $:-\$ (and a couple valves)

Yes but the buried muffler is no more. I ordered the Donaldson that several of you went with inside the rear bumper vertically by the fan. Just like Chris and Cherie from Technomadia did.

Geoff · November 29, 2018, 06:13:20 AM

It looks like the valve stem broke, so it wasn't wrong valve bridge adjustment. That happens right away. Are you going to put the turbo engine in?

luvrbus · November 29, 2018, 06:33:07 AM

LOL maybe the Jake got it, we had a rash of valve stems breaking not long ago with the after market valves machine shops were using

Geoff · November 29, 2018, 06:42:58 AM

Double LOL, my tight Jakes haven't got me yet! That engine just looks tired.

luvrbus · November 29, 2018, 06:55:42 AM

I have saw the spring and snap ring break on the Jake head that holds the slave piston in place and will drop a valve before the fat lady can start to sing not just on Detroit's

zimmysurprise · January 03, 2019, 01:14:45 PM

Thank you Santa.

Geoff · January 03, 2019, 02:32:38 PM

It's amazing what those 3d machines can make these days! LOL

Good luck in whatever you have in mind!

zimmysurprise · February 25, 2019, 06:24:33 PM

It's been a busy winter but spring is around the corner!

zimmysurprise · April 10, 2019, 02:35:09 PM

Last post and we'll let this thread die. Broken in locally for 500 miles and 18.2 hours, changed the fluids, heading south this weekend.