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Re: K30 Downgrade to Cummins Project
I think I'm going to rebuild the tranny since its so convenient now and there may be some wear on the synchros. Hopefully I can get the shop to also clean up the bellhousing and adapter plate, they have a lot of crud on them.
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Re: K30 Downgrade to Cummins Project
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Attached is a list of all the engine work done as part of the rebuild by Dieselwrencher. Can't remember if I ever posted this. All parts were genuine cummins parts unless noted.
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Re: K30 Downgrade to Cummins Project
Well just how much suspension lift will you have? I think you’re doing a 4wd. My pipe actually goes over the frame between it and the inner fender with some clearancing. And it runs tight against the firewall and under the floor pan all the way back
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Re: K30 Downgrade to Cummins Project
This is a 4x4 with a dana 60 up front. No lift per se. Thats whats making this build a bit more involved than most cummins swaps in squarebody's. I'll be using the existing air bag setup in the rear and adding one up front but when the truck isn't running or is cruising on the interstate it will be at stock height.
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Re: K30 Downgrade to Cummins Project
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Some more parts for the truck. Good to have gauges to protect this investment. I'm looking for a good guage pod. The one here with boost gage was from the W350 dodge donor.
Shown here are ISSPRO pryrometer, boost gage, and trans temp. I think I need to find a sender for the trans temp one. Also ARP bolts for the flywheel. |
Re: K30 Downgrade to Cummins Project
List of things to do soon:
- Buy reman starter and return the wrong one I got for a 2nd gen. - Return used alternator for core charge refund - Finish welding on trans x member and paint it - Paint newly done engine x members - Find a new dipstick and or tube (its not sealing, its loose around the handle - Figure out how to install the clutch pedal setup or if its easier to just fab one up and use dodge clutch master cylinder. - Wait for new steering box to arrive (old one had side to side play on output shaft :( - Weld on steering box brace once it arrives - Drop and clean fuel tanks - Replace rubber sections of fuel lines - Figure out which downpipe setup to buy - Call diesewrencher about getting the heater lines that bolt to manifold and towhooks (or you could just email me back Ryan lol) - Get the shop to give me a price on Getrag rebuild and info on the quality of their parts - Clean old crud off bellhousing and adapter plate- yuck - Order intercooler piping and elbows - Finish welding and paint custom engine accesory brackets - mount new engine accessories - Install front airlift bags Yep a lot to do. Tell me its worth it! So much to do and still more to spend. |
Re: K30 Downgrade to Cummins Project
Its definitely worth it and I think you will be very proud of it when its on the road.
I used 1st gen dodge diamond eye 4" exhaust on my truck. I cut and clocked a few straight sections, one by the trans before the transfer case and one over the axle and one tailpipe bend. It cleared the transfer case and frame which is the tightest spot. Nice exhaust for about $300. You have the low mount turbo so maybe a little more work and you will need a turbo flange I think. |
Re: K30 Downgrade to Cummins Project
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I got the sidemarkers for the 70 CST, they look good thank you! |
Re: K30 Downgrade to Cummins Project
Adding a couple more things to the to do list:
- figure out rear springs (how rough will the 9 leaf ones ride). - determine what is wrong with rear brakes or depending on spring decision, swap in AAM 11.5 rear axle after rebuilding the brakes on it. - redo core support, mounts for radiator and intercooler - condenser mounting (may need a shorter one than 94-97 dodge (hitting hood latch currently). - find a dual battery tray for driver side - equip truck with cruise control? - add ring and tach sensor to engine |
Re: K30 Downgrade to Cummins Project
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By turbo flange I did mean v-band and the hx35 has the same mount as the first gen exhaust so your good. 3” v-band I think. |
Re: K30 Downgrade to Cummins Project
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Some more pics of engine bay fab work below. Even made a couple of different mounting hole sets in the removable engine Xmember in case I want more clearance. Also note the frame mod by the power steering pump on driver side frame rail.
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Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
Lost a couple days due to the basement flooding. Had a snow dam in the backyard and it ran in under the patio door on thurs am. Had to skip work on Thurs and move everthing out and pull the carpet and pad, they will be tossed since they were 20 years old. What a pain.:devil:
On sat I was able to worked on rebuilding the clutch and brake pedal setup. Had to weld up the stud that the clutch rod connects to and regrind it back to a nice round shape. I ordered a set of new plastic bushings for pedal pivots even though the used set looked pretty good. I've also decided to put a new hydroboost unit on since the old one was leaking pretty good apparently and its unbolted now. I've also detected some play in the lower steering column bearing so I ordered a new bearing for that. Looks like it will have to come out anyways to get the clutch pedal setup in. Man this project went down the slope of replacing a ton of stuff! At least I know it will be better and hopefully more reliable on road trips/hauls. :chevy: I did finish welding on the trans xmember so thats good. |
Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
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Lost a week or two due to a flooded basement and then a failed water softener.
Back at the brake pedal setup rebuild and steering system rebuild. |
Re: K30 Downgrade to Cummins Project
You should like that redhead box. I've put a lot of them on dodges with no issues.
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Re: K30 Downgrade to Cummins Project
Good to hear, Ryan.
So I bought a XJ jeep steering shaft but its got a very slight amount of play that I can feel. I'm wondering if i should look for another or if there's a way to rebush it. Its almost no play but I can feel just a tad if i put one end in the vice and grasp the other. Thoughts? |
Re: K30 Downgrade to Cummins Project
If it is already loose I'd just get a new one unfortunately. I haven't seen where anyone offers replacement u-joints for them. You'd probably have to do some machine work to put a new u-joint in those yokes because if I remember correctly they peen those yokes to lock the caps in. Ebay has the best prices on them from what I have seen.
https://www.ebay.com/itm/Power-Steer...ts=Make%3AJeep |
Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
Where should the breather tube route? On my engine its shooting down between the starter and the block but its making it super hard to get that starter bolt in. I feel like it should go ahead of the starter but the plate with outlet elbow on the side of the engine is aimed for the starter :(
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Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
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https://www.borgeson.com/xcart/produ...cat=112&page=1 |
Re: K30 Downgrade to Cummins Project
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Re: K30 Downgrade to Cummins Project
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A bit behind on posting updates.
-Southbend clutch, southbend flywheel, cleaned adapter plate, torqued all and new starter installed -Engine bay cleaned up, fenders painted, firewall sealant touched up -new hydroboost on -pedal swap finished -redhead steering box mounted and steering column remounted -engine mounts and xmember tightened down Still need to mount clutch and brake MC's. |
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