My Official OM617 Toyota Pickup Repower Thread

[Dan Stokes]

XLNT! So glad you tracked it down.

Dan

[t walgamuth]

Yes indeed! Good work sticking with it!

[Maxbumpo]

You may have some carbon build-up in the associated pre-chamber, and that will gradually burn itself out the more you drive it HARD. If there is carbon build-up, it can really affect the idle quality and make more noise than normal, so you may see improvement with time. A long highway drive with plenty of uphills at WOT can have an amazing affect on an OM617.

[OM617YOTA]

Thanks folks, for the encouragement and the patience.

I'll give it a good flogging and report back.

[OM617YOTA]

Ran it for ~60 miles on the freeway, plus multiple trips to haul off yard debris and pick up compost and lumber. Not sure it's improving beyond what it was immediately after repair, but it's definitely not getting worse again, which it did with all previous attempts. Haven't had a chance to hit a significant hill and keep it at WOT for any length of time. It's definitely happy to cruise along on the freeway, just effortless and smooth. Can really tell that's what these engines were designed for. Also take-offs are much smoother, was getting what felt like clutch chatter, but no change in technique and much smoother now.

Still seriously happy about this. I'm actually driving my truck just because I want to, instead of only when absolutely necessary. Been putting off some other maintenance items on the truck because it was zero priority with the engine being in the condition it was in, so time to refocus on those other areas. If I can figure out how to put AC on it, I would make this my daily driver.

Getting better mileage and smoking less, too.

Thanks again, everyone.

[funola]

This guy put a 12V electric motor driven compressor in his 83 VW Rabbit. It may be the ticket for you if you are not Chinaphobic since it's made in China afaik.

https://www.youtube.com/watch?v=Es1zBw7RQBc

[OM617YOTA]

Thanks! I'm just fine with China products. ETA: Answer truncated and opinion on buying from China removed, that could become a whole different thread.

Anyway, that's awesome. Snooped at some of his other vids, looks like the compressor he's using is PN JVB075Z12 and will do ~3250BTU's of cooling @ ~30 amps. That's plenty of cooling for a little truck cab, especially as the truck had AC to begin with and will be able to recirc the air, unlike his setup. I also have a mongo alternator and have electricity to burn, 30 amps will be no big deal.

Thanks again.

[funola]

I believe he tried 2 different compressors but I do not recall the reason and not sure if the vid I posted is the latest. You may want to contact him before proceeding. He's pretty good with answering questions, very smart dude and does amazing work.

[mach4]

Originally Posted by OM617YOTA

If I can figure out how to put AC on it, I would make this my daily driver.

When I was researching some out-of-the-box solutions for my swap I found some interesting options. Some things you may want to research are -

- Rollguys bracket for a Sanden compressor is probably the cleanest, provided there is clearance to install. On mine I was able to modify his by tucking it closer to the engine and getting enough subframe clearance. (Unfortunately my measuring was faulty and got things welded mis aligned....my bad)

- There are combination alternator/compressor units for industrial applications that might be able to be adapted

- There are also hydraulic compressors that might be suitable for remote mounting. A large P/S pump might do double duty.

- And as already suggested electric driven compressors are available.

Good luck

[OM617YOTA]

Thank you sir.

My PS box is occupying the space that the stock AC compressor would go, so I doubt even Rollguy's brackets would work. I'm also looking at a compressor out of a Suzuki Swift/ Geo Metro, as they're about the size of a coffee cup and I could probably fab up some brackets to mount it wherever there's room. I'm liking the idea of the electric compressor best.

Time to find a condenser and another radiator, going to shorten the nose and tuck it back a bit, improve my approach angles and make it look less like an elephant seal.

Lastly, some pics of the truck doing what I built it for. Been quite handy.

[Dubyagee]

Cant get the link to work. How bout an electric compressor.

[OM617YOTA]

Originally Posted by Dubyagee

Cant get the link to work. How bout an electric compressor.

That's a great idea!

[funola]

I've looked at a few used Prius (2007 to 2010 MYS) and they all have marvelous AC which cools the car off amazingly fast in the heat of summer. They use an electric compressor that runs on 208 V 3 phase (that'd be AC) power. I am sure Toyota went through the trouble of a DC to AC converter to run that compressor because of its efficiency.

Anyone know what kind of compressor the Tesla use? I've read the newer Nissan Leafs use a heat pump.

[OM617YOTA]

3 phase alternating current also gives very easy speed control for a variable speed compressor, even more efficient.

[funola]

Yes, variable speed compressor is a feature in the Prius AC.