Recent content by Lawrence Koepke
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Chasing down smokiness and lack of power
My custom rebuild cost was around $12K, which included close to $2K for shipping from CA to WY and back. Justin charges $6.5K for a basic custom engine build. I had just about everything possible done, i.e. turbo rods & pistons, stronger head studs, his IP, injectors, cam, & fuel rail, etc...- Lawrence Koepke
- Post #12
- Forum: 6.9L IH & 7.3L IDI Diesels
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Chasing down smokiness and lack of power
My '91 F350 with the 7.3 IDI started emitting clouds of white smoke with an odor of diesel on startup, first running on 7 cyliders, then smoothing out after a few seconds. The smoke largely cleared up after a short time. However, it still blew out white smoke under throttle. I had added a Banks...- Lawrence Koepke
- Post #7
- Forum: 6.9L IH & 7.3L IDI Diesels
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Unknown Radiator Support Bracket
Nero, you are so correct. It is the "battery tray core support", according to an eBay listing I found using your suggestion. Not cheap; a rusty old piece of metal for $79, but worth it when desperately needed! Thanks for the prompt reply.- Lawrence Koepke
- Post #4
- Forum: 6.9L IH & 7.3L IDI Diesels
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Unknown Radiator Support Bracket
While Justin @ R&D IDI Performance builds the engine in my 1991 F350 7.3 IDI Diesel so it withstands all my upgrades for more power, I have been stripping the engine bay for a complete refurbishment. Unfortunately, I have only one of what I believe are two matching brackets that attach to the...- Lawrence Koepke
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- Replies: 3
- Forum: 6.9L IH & 7.3L IDI Diesels
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Banks Turbo Install - Turbo and Pressure Chamber Not Lining Up
Oh, THAT brace.. Yeah, mine was quite tight, barely got it on; it was a struggle. I may have taken a rat tail file or dremel to its hole to finally get it on; not sure, but I remember it was a PITA. I hope you enjoy the end result as much as I have enjoyed mine. Trouble is, I tend to burn more...- Lawrence Koepke
- Post #16
- Forum: 6.9L IH & 7.3L IDI Diesels
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Banks Turbo Install - Turbo and Pressure Chamber Not Lining Up
Which tranny? I have the E4OD, custom built for me at Geezers Garage in Oregon, and the brace lined up perfectly. Regarding the firewall "modification", IMHO, they have us cut much more than needed out, but, yes, the downpipe needs all the clearance possible, but the driver's side didn't need so...- Lawrence Koepke
- Post #12
- Forum: 6.9L IH & 7.3L IDI Diesels
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Banks Turbo Install - Turbo and Pressure Chamber Not Lining Up
I installed the Sidewinder kit in my '91 F350 last year. After MANY struggles like yours, I finally ended up grinding the support foot on the casting, trying the fit, then grinding a little more, etc. until I finally got the casting installed. Maybe the '91 year is somewhat different than the...- Lawrence Koepke
- Post #10
- Forum: 6.9L IH & 7.3L IDI Diesels
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7.3 idi turbo whistle
Where is the whistle coming from? I installed a Banks Sidewinder kit on my '91 F350 7.3 IDI, and hear a whistle in the exhaust at idle, but that's all. The Sidewinder produces zero boost at idle, as designed.- Lawrence Koepke
- Post #5
- Forum: 6.9L IH & 7.3L IDI Diesels
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Glow plug troubles
The glow plug controller 12 V source goes through a big connector in the harness near the passenger side head, and is protected with fusible links buried in the harness next to the passenger-side battery. The pins in mine developed corrosion, creating resistance. My short term fix was to add...- Lawrence Koepke
- Post #77
- Forum: 6.9L IH & 7.3L IDI Diesels
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Glow plug troubles
Another vote for wires. The glow plug controller wires and the connector buried in the harness have caused many an IDI to fail to start as they age. I have a 1991 F350 Lariat Crew Cab, and I found high resistance in the connector that is in the middle of the harness, feeding voltage to the...- Lawrence Koepke
- Post #14
- Forum: 6.9L IH & 7.3L IDI Diesels
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Ignition Switch RUN terminal wire R/LG always hot
Well, I just opened up my harness, pulled out the unused glow plug wires to the old relay location, anf found to my delight that the ignition RUN wire and Warning light wire are just the right length to reach the new location on the passenger fender plate. So, maybe I should consider pulling...- Lawrence Koepke
- Post #27
- Forum: 6.9L IH & 7.3L IDI Diesels
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Ignition Switch RUN terminal wire R/LG always hot
I've been doing some number crunching on the glow plug wires. I had 2 factory 10 gauge wires with 14 Gauge fusible links in them. A 14 gauge fusible link is rated at 32 amps, so that suggests to me that a total of 64 amps is the maximum the factory wiring can handle, much less than what I have...- Lawrence Koepke
- Post #24
- Forum: 6.9L IH & 7.3L IDI Diesels
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Ignition Switch RUN terminal wire R/LG always hot
I have performed a GlowPlugWire-ectomy in prep for moving the relay onto the passenger fender. The plan is the use 4 AWG wire to and from the relay, one cable only to the rear of the engine, tied to the glow plug wires. I've read the glow plugs can draw 200 amps, and Philip1 (above) ended up...- Lawrence Koepke
- Post #23
- Forum: 6.9L IH & 7.3L IDI Diesels
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Ignition Switch RUN terminal wire R/LG always hot
Ah, that clears up a mystery, as to why on the back of the manifold. My experience tells me that items are mounted on the manifold for either vacuum or coolant. I gather it's still there on the 7.3 because "that's the way we've always done it", and "that's where the mounting holes are". Wow. Two...- Lawrence Koepke
- Post #20
- Forum: 6.9L IH & 7.3L IDI Diesels
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Ignition Switch RUN terminal wire R/LG always hot
laserjack, I see you have the Banks turbo. I received mine on Friday, and it will be the next project after I take care of this current issue. I'm wondering if I should move my relay/controller like you did. I have not seen one of these trucks with the Banks Sidewinder installed, but I have to...- Lawrence Koepke
- Post #14
- Forum: 6.9L IH & 7.3L IDI Diesels
