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05-05-2015, 09:41 PM | #1 |
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Re: 72 k20 project
That is really looking sharp Ryan! Can't wait to see a video of it hauling up one of your pass's over there!!
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1972 K2500 Long Box 400/350 |
05-06-2015, 09:14 PM | #2 | |
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Re: 72 k20 project
Quote:
I want to get a video reaction when my lady has her first modified diesel power application experience..Haha. hopefully it pulls harder than her car |
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05-07-2015, 10:21 PM | #3 |
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Re: 72 k20 project
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05-06-2015, 09:13 PM | #4 |
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Re: 72 k20 project
No, pro werks manufactures a tube donut. It's a torus. Like a mandrel bend only 360°. They are much tighter than most mandrel bend on cl radius. I have a few places where the tight bend will be helpful.
I ordered a couple, but naturally one size was out of stock, no indication on lead time... |
05-08-2015, 08:18 AM | #5 |
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Re: 72 k20 project
Once you get that exhaust brake up and running you will need to give a review. I have eyed it a couple of times. My only concern is the spring loosing tension over time. I really like the idea of keeping max back pressure. When I pulled the turbo off my 6.7 I ended up with a 66mm Schwitzer and a factory C7 cat brake mated up to it. This was what I ended up making all the flanges for. Well that and the multiple turbo swaps on my 12v. Your turbo setup looks really good. From my experience make sure that you have a really good external gate on that top turbo. Even punching out the factory holes under the puck wont flow enough under moderate boost levels. It looks like you have an external wastegate setup in the pics but I cant tell what its hooked up to.
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05-08-2015, 11:27 PM | #6 |
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Re: 72 k20 project
i hope to deliver the review sometime. i plan a test pull up wolf creek once i get things sorted out. jeep on the trailer and foot in the fuel. that will be the uphill test. then the turn around and come home will be a very good downhill test of various braking systems.
i tacked up the start of the exhaust. more flanges and other neccesities are en route for further assembly. |
05-09-2015, 10:52 AM | #7 |
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Re: 72 k20 project
Ryan:
What's your source for the large exhaust tubing, flanges, etc.? I'm looking for some 4" SS for mine. Thanks, Burnett |
05-09-2015, 11:11 AM | #8 |
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Re: 72 k20 project
i've found 5" to be a little harder to find. mandrels are out there but fewer places carry 5". for most of the bends and the strait tube sections, i order from Columbia River Mandrel Bends
they have reasonable prices and a good selection. i havent used any of the stainless stuff so i can't comment on that. they have many flanges and clamps as well. i used Amazon to search for the 5" machined v-bands since prices are all over the place and amazon seems to be the easiest way to find the cheaper offering. Burns stainless has a good reputation for quality, with an associated price tag. Reid Washbon racing exhaust has all the goodies in stainless too. i have talked with them. you pay for their stuff as well, but nice people and the product looks great. i will probably use them the next time i build a performance exhaust. they have 621 Inconel mandrels! super bragging rights if you build a TT manifold for a cummins with Inconel. 4" should pose no issues for locating parts. if you are looking for super tight CL bends Reid Washbon carries them in square radius and chassis shop sells the torus donuts in a square CL in 304l, MS and AL. there is an outfit in denver that i can get the name and number for you if you are interested. they sell the v- band clamps and turbo outlet flanges(Mild Steel) for about half of any of the "performance" outfits online. i would bet they have 4" as well. quick shipping and pretty easy going staff. |
05-09-2015, 07:33 PM | #9 | |
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Re: 72 k20 project
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05-11-2015, 07:36 AM | #10 |
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Re: 72 k20 project
Most big truck parts supply houses carry 5" and larger. Local sourcing of 4" was always more difficult. To small for semis and the likes.
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05-12-2015, 03:45 PM | #11 |
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Re: 72 k20 project
Racepartsolutions is another good source for flanges for 4" AND 5" pipes and turbo parts.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
05-13-2015, 08:37 PM | #12 |
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Re: 72 k20 project
Ryan not trying to rain on your parade but aren't you concerned about the lag time you exhaust brake will have being that far away for the motor?
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Brian |
05-13-2015, 09:13 PM | #13 |
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Re: 72 k20 project
nope. Pressure is pressure. There is a slightly increased volume to fill, but considering an engine displacing nearly six liters per 2 revolutions it won't take enough time to notice the volume, especially at higher engine speed. It's a pretty common place for these big ones in pick ups. And more importantly, it won't matter, since this is the first place it will reasonably fit. even if there was a notable difference, it will be considerably better than not running one.
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05-13-2015, 09:18 PM | #14 |
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Re: 72 k20 project
Very true!
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Brian |
05-13-2015, 10:45 PM | #15 |
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Re: 72 k20 project
Every medium duty truck I've ever worked on that had one was a minimum of 24-36" from the engine. They all worked fine. And like Ryan said, there will be pressure built up. It's like jamming half a potato in there side ways.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
05-14-2015, 12:12 AM | #16 |
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Re: 72 k20 project
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05-14-2015, 07:42 AM | #17 | |
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Re: 72 k20 project
Quote:
One more thing. My exhaust brake is mounted back like this also. Its probably 4' back once the down pipe is accounted for and that was as close as I could get it. It works perfectly fine however it does take a second longer to start slowing the truck down over a turbo mount. In actuality it is probably better for the turbo as it gets a little more time to spin down. As said it takes a little longer to fill the pipe volume up but it is not bad at all. Its like adding a larger intercooler. |
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05-16-2015, 11:17 PM | #18 |
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Re: 72 k20 project
I have that parts everywhere thing too. bigger shop area and some storage will be on my dream list when we decide to get out of the crackerbox row. just enough space to build would be nice. id like to pick my own set up, but anything more spacious will be welcome!
i hacked away at this some. 5" donut the pair of pants flanged on from the outside |
05-18-2015, 03:03 PM | #19 |
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Re: 72 k20 project
Great work!
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
05-19-2015, 10:42 PM | #20 |
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Re: 72 k20 project
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05-20-2015, 02:47 PM | #21 |
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Re: 72 k20 project
Very nice! I bet you could sell those hangers to quite a few folks!
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
05-23-2015, 10:48 PM | #22 | |
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Re: 72 k20 project
Quote:
Very nice work.
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Tom 71 K2500 71 K5 Jimmy |
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05-24-2015, 09:05 AM | #23 |
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Re: 72 k20 project
Ryan this thing is really gonna be bad %ss. Doesn't seem to be any lack of motivation! Killer job so far!
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Shawn 68 chevy K/20 05 chevy 3/4 4x4 71 short step-sold 71 chevy Beauville van My build. http://67-72chevytrucks.com/vboard/s...d.php?t=633039 |
05-24-2015, 08:36 PM | #24 | |||
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Re: 72 k20 project
Quote:
Thanks Tom! Quote:
Quote:
this needed to be addressed. i drew up a simple solution to a pesky thing. for the fuel feed, return, brake line and electric harness. i still have the brake line to the rear to make up. Last edited by ryanroo; 05-25-2015 at 09:53 AM. Reason: department of redundancy department |
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05-24-2015, 10:19 PM | #25 |
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Re: 72 k20 project
I found 3/4" forged eye bolts at a local farm and garden store. That size has a working load of around 5000 lbs.
Did you make those hard line holders? Those are sweet. I made some cruder versions of those for my Nova. |
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