'55 Chevy 3800 Cummins

[Dennis]

Looks great!

[Cobound]

Yeah, those suck...I've actually helped, and don't recommend it

Does look titties tho - dope ride, dude, super excited for you

[6DoF]

got after getting the 2nd turbo mounted. everything looks like it'll work out really good for the entire cold side, and the manifold adapter and exhaust exiting under the cab should be good ... this hot pipe between the turbo's is just TIGHT. it's going to requires a lot of small radius work.

3D printed some more jigs to help, the one pictured is just to slide into position and draw a straight line around the tube. i made another to mark out a 10deg pie cut from the bend.

[xj_man_646]

I don't know why, but it always seems funny to me that there's all that turbo weight just hanging off the side of the manifold like that, assuming there's no additional support anywhere.

I swear I've asked but what is under the crank damper with the little pulleys and belt?

[6DoF]

Originally Posted by xj_man_646

I don't know why, but it always seems funny to me that there's all that turbo weight just hanging off the side of the manifold like that, assuming there's no additional support anywhere.

I swear I've asked but what is under the crank damper with the little pulleys and belt?

right! i felt similar and lots of ppl build big support brackets down to the block for the primary. since mine is over top i don't have good access and started to research it. there's not a single compound kit on the market with a structural support bracket down to the block that i can find. any brackets used on the primary at best resolve the rotation so the hot pipe doesn't spin in the v-band on the back of the small turbo. my bracket will eliminate any possible spin, and provide some structure to keep the welded hot pipe from cracking since it's not carrying all the load.

this manifold has more than enough structure, and so do the 12x M10 bolts holding it to the head. my bits will all hold up ... so it's down to the 4x M10 studs as the only "weak" point. really shouldn't be any problem.

the mini-belt driven thinger under the balancer is my lift pump, Power Dirven Diesel predator mechanical pump. It's built for higher psi and flow than the factory mechanical could ever get too, and similar price to the electric ones.

https://powerdrivendiesel.com/produc...tor-lift-pump/

[6DoF]

the pie-cut and straight cut stencils were awesome, highly recommend. the pie cut made quick work of adding some angle and tightening up the bend. it was a 10deg print, but i cut on the sharpie lines so probably more like 12-14 actual. the straight cut needed some tube for alignment, can't just cut off a sliver with it hanging off the end. before i started cutting back the start of the pipe i made multiple marks. ended up trimming it 3x, made it easy easy when already marked.

[6DoF]

i hate how my exhaust welds look, they are always nasty ... not going anywhere, but ugly. good thing it's getting painted and fully wrapped for that SEMA look

i am super excited this is together, and it's crazy sturdy when assembled. wish i had more room to make this pipe more racecar, but she should be fine. it's tight, but it's big at 3.5". should also have good room that i can get the 4" down pipe past the tire easy without rubbing it at full lock too. cross your fingers for me the outlet flange shows up soon.

[xj_man_646]

Looking pretty good!

Have you considered a hood stack?

I kid, I kid.

[6DoF]

Originally Posted by xj_man_646

Looking pretty good!

Have you considered a hood stack?

I kid, I kid.

maybe ...

[Cobound]

Admiration and respect.

[Hoofmann]

Oh man, I have not checked on this thread in a while. Looking good dude!

[Cobound]

Thought of you, dude…

https://www.instagram.com/reel/C1XFA...p0bWNibjUwb29q

That’s some serious practice

[6DoF]

i would LOVE to have a TIG finally ... one day, after the shop is built.

visible welds i try to take more care in, but exhaust will all get wrapped ... i don't bother to change to a smaller wire and just let it eat. i also just fill some gaps vs taking the extra 20min to REALLY fine tune some exhaust pipe fits

[6DoF]

was at the in-laws over the weekend, but still got some stuff done.

- Manifold turbo is officially installed (measured for oil lines)
- installed dash to windshield trim
- got sensor bungs on the hot pipe
- the wife cleaned the inside really good
- started fab of the intercooler mount
- installed seatbelts

i really like how the seatbelts came out. should be way better than just a lap belt or retrofitting a 3-point. also pretty comfy with no cutting into my neck or pulling bad.

[Cobound]

In a vehicle that age, you legally probably only need a lap belt, no? So you could wear them either way you'd like?

[6DoF]

Originally Posted by Cobound

In a vehicle that age, you legally probably only need a lap belt, no? So you could wear them either way you'd like?

legally i need absolutely nothing for a belt, i could go completely without. but i don't trust other ppl ...

[Cobound]

Werd

[xj_man_646]

Missed opportunity to use GMT800 front seats with the integrated seat belts.

I can't but help think I'd get annoyed with harnesses. YMMV though, and am enjoying following the build, so keep it up!

[6DoF]

Originally Posted by xj_man_646

Missed opportunity to use GMT800 front seats with the integrated seat belts.

I can't but help think I'd get annoyed with harnesses. YMMV though, and am enjoying following the build, so keep it up!

looked into those, but they are so bulky up in the corner where this cab curves in, they push the seat even further forward.

i have been using harnesses in the TJ for a long time and really like em. lap belt for just around town, shoulders for longer or highway trips. i really do prefer them.

[xj_man_646]

Do you cinch them up to proper tightness when using the full harness? That's the part that sucks to me...otherwise what good are they doing