Author Topic: Getting ready for Bonneville(rebuild)  (Read 1892861 times)

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Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2640 on: November 24, 2023, 11:57:12 AM »
Inside view of our record run.


https://youtu.be/IMP35Jjg6IY?feature=shared

     Data log shows Troy AT 30-35% TPS for 8 sec in 1st 35% for 9 sec in 2nd and 50=100% in 3rd at 7300rpm
    engine losing power for 3 sec before finish line.

     Throttle position can be seen left of throttle body.

               JL222


                           

     
« Last Edit: December 22, 2023, 04:12:08 PM by jl222 »

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2641 on: December 22, 2023, 05:18:51 PM »
Inside view of our record run.


https://youtu.be/IMP35Jjg6IY?feature=shared

     Data log shows Troy AT 30-35% TPS for 8 sec in 1st 35% for 9 sec in 2nd and 50=100% in 3rd at 7300rpm
    engine losing power for 3 sec before finish line.

     Throttle position can be seen left of throttle body.

               JL222


                           

     

    We checked the gearing for 3rd gear [ no shift to 4th } gear was  because of the 222 mph time it and 7310rpms seemed that the 25% overdrive was not working but that is not possible. we have three Owens plantary drive transmissions with a shiftless 25% overdrive in rear which puts all transmissions in over drive.
ratios are 1.4st  1,25 2nd  and1.25rd overdrive changes all to overdrive giving a 1 to 1 ratio to third trans before shifting into high and 25% lower gear ratio.
 To check if third was 1 to1 and with 2.50 rear end ratio there should be 2.5 turns of the engine to one turn of the tire.
 It checked out :cheers:

 times were from start of tps 1st 8 sec 140mph 2nd 18 sec 207mph 3rd 32 sec 254mph.

 ENgine lossing power at end data log shows 3 sec video shows 2 sec

 250 x 5200 divided by 3600 =366 ft sec so between 732ft or more loss of power
and speed :-(

                  JL222

 
 

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2642 on: December 26, 2023, 04:43:30 PM »

  Times above are total times from start,

  8 sec in 1st  10 sec 1n 2nd and 14 sec in 3rd.

  32 total seconds.

                JL222

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2643 on: January 17, 2024, 08:09:30 PM »
  WE discovered water in the oil after sat run. so put new oil for Sunday run. still water in oil after run ''of course'' Pulled pan off back at shop, ran water through engine and spotted leak at bottom of a sleeve So me heating block with torch and ''Troy'' pulling got the sleeves out. NOT EASY. and we just got them back in Monday using 4 $20 high temp grey RTV silicon gasket makers. 
 Bearings looked good but new on way along with new 60 thou copper head gaskets.

 I guess I should take the heads apart , lap the valves , check spring pressure ECT, pain in the ass but no big rush until May meet.

                   JL222
« Last Edit: January 17, 2024, 08:14:08 PM by jl222 »

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2644 on: February 02, 2024, 01:44:47 PM »
 
  Data logers are a great tool.

 Got to wondering how fast rpms were building before max at 7310 and revs dying off due to air fuel blow off and 3 sec to tps shut off

 data log shows rpm gaining 300 rpm every 1.5 sec.

 3 sec = 600 rpm.

  Hoping for a good run at may meet: cheers:

                JL222

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2645 on: February 18, 2024, 05:26:14 PM »

 Pistons are in, new bearings, pan installed, adjusted oil pump pressure down, will find out how much on fire up, head studs in and we had to in large oil hole in new gaskets to rocker shafts due to slight misalignment. Checked a couple of valves and looked OK as engine has not been run very much. Installing next weekend.

 Only thing left to fix is patching header where AF monitor blew out.

            jl222

             

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2646 on: March 01, 2024, 12:49:54 PM »
 
  Heads on last weekend, Install lifters, pushrods, intake manifold and blower tubes this weekend.

 IF Troy doesn't go desert riding. Lots of rain forecast so maybe not.

            JL222

 

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2647 on: March 03, 2024, 02:18:01 PM »

  Heads on last weekend, Install lifters, pushrods, intake manifold and blower tubes this weekend.

 IF Troy doesn't go desert riding. Lots of rain forecast so maybe not.

            JL222

 
[/quote
 All the above done except blower tubes.
Valves adjusted and A/F blow out hammered back and ready for welding.
  Once welded, one more day in shop and ready for fire up.

                     JL222



                           

Offline jl222

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Re: Getting ready for Bonneville(rebuild)
« Reply #2648 on: March 10, 2024, 04:36:55 PM »

  Engine together, Brad Bosworth welded air fuel bung back in header with extra bead around it.
 SO once installed, ready to fire.


                    JL222