It appears he is referring to this monster: The QP25 http://firewall.reddotcorp.com/pdf/QP25%20compressor%20brochure.pdf Tim, Can you get red dot parts? I thought I saw some on your site. Here is the red dot part number 75R91182Q It is a 141 mm clutch would the extra displacement make it worth it? I...

Well it looks like I can play the guinea pig. Tim that looks good, Let me see what else I need and I’ll give you a call and order it along with a dryer. Then I can see if the hoses will work and double check mounting. I can’t say the market would be huge but these old beasts do have a bit of a rabid...

Holy cow that’s awesome.

So which compressor should I order? The 141 or 127mm clutch?

Detroit AC I’ll get you a picture.

So true. Thanks for your help on this. I’m beginning to get a little excited. It may be quite the fun project.

bohica2xo wrote: ↑Mon Jun 28, 2021 9:55 pm Actually If the bolt holes fail to line up at all with the pulley in the right place, making an adapter is pretty simple.

It gets harder when one or more holes ALMOST line up.

That’s one of the ones I was looking at. It’s a 141mm clutch vs 114 on the FS10. This TM21 has a 127mm clutch. https://www.ackits.com/comp-tm-21-dir-rh-pad-8gr-127-3e-12v-pkd-2w-d-49-3632?search=Tm-21 Would that be a better compromise? Or will the increased capacity make up for the slower pulley spe...

Yes that’s what I’m thinking. I am hoping the increased capacity would make a noticeable difference.

Okay so how about this: TM-21 to replace the FS20 https://www.mcc-hvac.com/wp-content/uploads/2014/10/TM21_Compressor_datasheet_web.pdf This gets me 215cc per rev. Dimensions are very close to the FS20 I would need to fabricate some spacers and possibly a longer belt and I would have to have a custo...

Thanks again for the info DetroitAC.

It’s fascinating to see what goes into the decisions that a manufacturer has to make.

Now does anyone know of a 200cc compressor that I could retrofit into my excursion……

That’s some great info!

I will measure the pulleys to see what kind of difference there is.

I didn’t realize that the suburban was dual txv I just looked on rock auto and saw an orifice tube listing and figured that it had an orifice tube/txv like the excursion. That makes a lot of sense.

So I have a question for the brain trust. Of course this is related in a round about way to my favorite behemoth the 2000 7.3 excursion. With the help of this forum I’m getting just about all I can out of that system but I can’t help but compare it to my wife’s 2008 suburban. Her car has ice cold AC...