Looking to get a crash course in FSJ ('75 J10) knowledge

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letank
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Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by letank » Sat Aug 22, 2020 8:54 am

GoMopar440 wrote:
Thu Aug 20, 2020 10:32 am
For anyone that's interested, the carb casting is a 1.08.
the 1.08 is what I have on the 74... everybody wondered which I had such a good gas mileage... it took about until 2012 when I realized I had a 1.08 while everyone had a 1.22...

Yes the power valve is different, it is internally activated, no manifold vacuum hose
Michel
74 wag (349 Kmiles... parked, next step is a rust free body)
85 Gwag (227 Kmiles... the running test lab)
See Engine bits , Fuel and brake lines, Body work, Trany and TC

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tgreese
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Location: Medford MA USA

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by tgreese » Sat Aug 22, 2020 9:33 am

The tall power valve is two-stage, and the short one is one stage. There is a deep cover for the 2-stage valve. I'd say you have the wrong kit for that carb. Too bad - the sellers charge a premium of about $20 for the 2-stage valve. Possible you have a kit for a 2150, which has a different style of choke pulloff that's not rebuildable. A 2100 kit should include that diaphragm, in my experience. The 2100 came with both 1-stage (early) and 2-stage (later) valves, in my experience. My J10 has a '76 1.08 2100 with a 2-stage valve from a California 360 Cherokee, so the change in power valve brackets your year.

I don't think there's any difference in the activation of the 2-stage vs the 1-stage PV. In both cases, vacuum is applied to the cover area. With the 2150, the cover has a vacuum nipple, and the 2100 as an internal passage to the cover.

Apparently the QuickFuel power valves will fit a Motorcraft. The new valve should come with a gasket. https://www.summitracing.com/search/bra ... wer-valves

RockAuto has the choke pulloff diaphragm https://www.rockauto.com/en/catalog/jee ... l+off,6000 Napa should have it too.

You could try a kit for a '72 V8 CJ-5 or a '71 V8 Wagoneer and it should match the earlier 2100 characteristics. Apparently the Hygrade kit does not include the pulloff diaphragm - that's cheesy https://www.rockauto.com/en/catalog/jee ... r+kit,5964 Should be a good kit otherwise.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 FCA Jeep Cherokee KL Trailhawk, ECO Green


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GoMopar440
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Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Sat Aug 22, 2020 12:27 pm

The kit I got is the Hygrade from Rock Auto, so yea, no choke diaphragm.

The single stage PV and the cover gasket look fine, so I'm just reusing those for now. Once the truck is running I'll be able to see if they need replacement.

I was able to find and buy a choke diaphragm at a local Autozone, and it'll be in Monday. Since it's easily accessible from the top, it will be easy to swap out.
'75 J10 Thriftside, 360, TH400, BW1339


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GoMopar440
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Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Tue Aug 25, 2020 4:19 pm

Got the choke diaphragm and installed it today. Also took care of the flexible trans lines going to and from the radiator.

I hooked up the rubber fuel hose to the hard line on the frame rail. Then I put air pressure into the rubber line with an air gun to check that the line was clear back to the fuel tank. The air found a large split in the line under the driver door. I've picked up some new fuel line, but haven't had a chance to install it yet.

I was working on replacing the water pump when a thunderstorm pretty much shut me down for the day. I won't be able to finish the water pump until next time I get home, so I'm going to order a new timing set while the front of the engine is still torn down.

Question: What size timing gear width is correct for a stock '75 360? I've seen a few different width options, but aren't sure which one will work. Is there a preferred brand?
'75 J10 Thriftside, 360, TH400, BW1339


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GoMopar440
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Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Sat Oct 03, 2020 3:15 pm

I'm still working on it.

Need to attach new ps pump and the new pressure and return lines, attach heater and radiator hoses to new water pump, reattach clutch, fan and shroud, replace leaking fuel line and then drain and clean out fuel tank. After that it should just be a matter of draining and replacing all the fluids before I'll be able to take it out for a drive.
'75 J10 Thriftside, 360, TH400, BW1339

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tgreese
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Location: Medford MA USA

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by tgreese » Sat Oct 03, 2020 3:47 pm

Regarding your timing chain question, mmm I don't know offhand. Aren't there double-roller and OEM style gears and chains? I think the usual advice is to get the OEM set, which will come with the chain and both gears. If you post a new thread with a descriptive title you might get more response. I know the timing gears have been covered a lot on the mothership forum (IFSJA.org). Lots of discussion of aligning the oil channel in the gear.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 FCA Jeep Cherokee KL Trailhawk, ECO Green


Topic author
GoMopar440
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Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Sat Oct 03, 2020 3:57 pm

When I had it running shortly after getting it home it sounded surprisingly good. So for the moment I decided to wait on messing with the timing set until it gives me a reason to. As far as which set, I was thinking of getting the double roller Edelbrock one at BJs since it specifically states that the oil grooves are located properly.
'75 J10 Thriftside, 360, TH400, BW1339


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GoMopar440
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Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Wed Oct 07, 2020 8:38 pm

Looks like I'm going to be heading back home way earlier than expected. My mom just passed this afternoon and I've got to go make funeral arrangements and deal with everything else that needs to be tended to. :cry:
'75 J10 Thriftside, 360, TH400, BW1339


letank
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Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by letank » Wed Oct 07, 2020 9:50 pm

sorry to read about the sad news, deepest sympathy, even as not knowing your Mom, it is a challenging time to deal with the waves of memories, the better memories always warm up our heart and soul
Michel
74 wag (349 Kmiles... parked, next step is a rust free body)
85 Gwag (227 Kmiles... the running test lab)
See Engine bits , Fuel and brake lines, Body work, Trany and TC

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Chubbinius
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Location: SD, CA

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by Chubbinius » Thu Oct 08, 2020 7:29 am

Sorry to hear of her passing. Wishing you and the family and friends comfort as you remember her and all the good times; and strength while attending to everything else.
1970 1414X Wagoneer "The Pig"
-Custom Special
-Dauntless 350 V8
-D27 front/D44 rear
2006 XK (65th Ann Edition)-DD


Topic author
GoMopar440
Posts: 50
Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Thu Oct 08, 2020 8:07 pm

Thanks for the kind words guys.

I'm back home now and will be doing whatever I have to do for the funeral for the next few days. When I'm not busy with that stuff I'm going to try to turn some wrenches on the Jeep. Its my way of keeping my mind from staying focused on the loss so much.
'75 J10 Thriftside, 360, TH400, BW1339


Topic author
GoMopar440
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Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Fri Oct 09, 2020 7:03 pm

I finally had a little free time before sundown so I got couple things done.

The PS pump is mounted and the new hoses are hooked up to it. The fan belts have been routed, but won't be tightened up until the clutch and fan assembly is bolted on.

More to come...
'75 J10 Thriftside, 360, TH400, BW1339


Topic author
GoMopar440
Posts: 50
Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Sat Oct 10, 2020 7:21 pm

Clutch and fan installed, fan shroud repaired and installed, upper radiator hose and heater hose to water pump installed. While I was waiting for the epoxy to cure on the shroud I pulled the grille off to straighten it and touch up the black paint. I also repainted the area behind the grille and the front face of the radiator black. Both fan belts were also tensioned and tightened down.

There's not much left to do before I can change the fluids and hopefully be able to take it for a spin.
'75 J10 Thriftside, 360, TH400, BW1339


Topic author
GoMopar440
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Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Wed Oct 14, 2020 5:50 pm

The weather has been a little too crappy to work on the Jeep the last couple of days. Tomorrow's looking better, so I'm hoping to get the last few things done that I need to do in order to get it running.

I bought a few more parts lately as well. I got a cargo light switch and a Performer intake from the IFSJA classifieds section. The switch showed up, but the intake isn't here yet. I also ordered this FST 600 cfm Holley clone carb from Summit to go on the intake. https://www.summitracing.com/parts/fut-41600
'75 J10 Thriftside, 360, TH400, BW1339

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Chubbinius
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Location: SD, CA

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by Chubbinius » Thu Oct 15, 2020 9:19 am

Wow, you are cranking along on it. Nice grab on the intake and the new carb.
I like how you work several projects at once so there is little down time while waiting for parts, drying, etc.
1970 1414X Wagoneer "The Pig"
-Custom Special
-Dauntless 350 V8
-D27 front/D44 rear
2006 XK (65th Ann Edition)-DD


Topic author
GoMopar440
Posts: 50
Joined: Sat May 23, 2020 5:12 pm
Location: Montana

Re: Looking to get a crash course in FSJ ('75 J10) knowledge

Post by GoMopar440 » Sat Oct 17, 2020 4:27 pm

Today I got the radiator filled, PS pump filled, brake MC topped off, washer fluid filled, broken section of fuel line replaced. I also added some Stabil, Berryman's fuel system conditioner and 5 gallons of fresh premium (no ethanol) gas to the tank. After installing the battery, it would barely turn over, so I've got the charger hooked up to it now. I did get it running for a second with a shot of starting fluid, but I'll let the battery get a full charge before I mess with it again.
'75 J10 Thriftside, 360, TH400, BW1339

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