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PDR Intercooler testing

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Look what I found on EBAY.......47RE $850

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PDR has been working on the intercooler fix over the stock versions for a while now and they/I believe it has worked out. The cooler will fit in both 12 and 24 trucks with no issues other than the normal D/C install... Direct Bolt in, and is pressure tested to 150 psi then heated to simulate our turbo's air temp that is created.



As some of you know my stock cooler finally let go a week or so ago and the timing couldn't have been better, now needing an intercooler I called Piers on the new ones and it had just come in that day, so they quickly shipped it to me to R&D and so I could have a working cooler.



So here are some of the results copied from the E-mail I sent:



Pressure drop at 60 psi of boost is 4psi with pop off valves capped, cross verified with swapping the gauges, measured from the discharge of the little turbo prior to the cooler verses the intake hat... ... Final air intake temp drop at the hat was 60 degrees less than the stock unit.



Temp drop was measured at 65 psi of boost at the intake hat, 400 degrees at the discharge elbow of the small turbo prior to the Intercooler, result was less than 90 degrees at the hat because that was as low as I could get the gauge to read, this would be better tested when it was colder outside... . conditions were 75 degrees F, Humidity 48%, Baro 29. 98, elevation 1300 ft!



EGTs' in Valet were 1450 (down from 1550) at 115 MPH going from 30 MPH, locked converter normal drill. I made two runs like this as I couldn't see the gauge good the first time. First one netted 130 degrees at the hat, the second netted 150, power in valet should be about 550... ... all of this was with pop offs capped and at 75 psi.



I did not make a full fuel run with the pop offs capped..... you guess why. When I measured the intercooler temp drop the last time it was with the old Twins, then I got a 280 degree drop but at 50 psi of boost, I don't think we are seeing the full potential in this area because we can't see the lowest temp at the hat but I'm very pleased so far.







The cooler does everything I expected and more, I'm still testing so if you folks want to see something that I can test just post it and I will try to duplicate it.



BOTW, the intake temps I'm seeing are lower than what I usually see with the water on, so needless to say with the water on I can't read the temps that low, I did try it during the day and couldn't read the temps below 125 degrees.



Jim
 
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Just like the stock ones, they cast new end tanks with the mounting holes for the assy. and mounting tabs on the bottom for the intercooler support bumpers, except for the mounting brackets (which you will have to swap from your stocker) there are tapped holes (6mm x 1. 0).



If you are looking at a stocker from a distance you will not see the differences till you get close enough to see the different style tubes used, when installing it you will notice that were you slip the boots on there are two sholders instead of one on the stocker so there is a better support for the clamps.



Jim
 
pics?

Jim would you happen to have any pictures, before you put the cooler in?? and possibly after ??



Just Curious

thanks Curtis
 
Curtis it looks just like yours, no different except for the square cooling tube design when you get close to it, it's within 1/4" of the stock cooler so there is really nothing to see, I didn't take any pics of the R&R as there was no need!



Merrick there is no core to deal with, the new tanks were casted and the intercooler core is totally different, the only thing I took off my old cooler was the two brackets for the A/C condensor and transmission cooler and the 4 rubber mounting bumpers that slip off.



For sale, stock intercooler with a slight leak at high boost.



Jim
 
Jim, you said square tube design, you mean those babies are "bar and plate" and not the stock style "tube and fin" design, right? Bar and plate design has 35% greater heat sink capability than the old school tube and fin style. Sounds like those intercoolers are going to be winners.
 
Yes the cooler is not a tube design like the stockers, the tubes are square then have a slight support inside them but you can look through them if you had one in your hand, the stockers have the fins in the way.



Last year when I was up at the PDR dyno days Piers had just got the cut away's in the day before so we all could see how they were built. They had cut away's of both so everyone could see the difference, I knew then it was going to work much better for pressure drop but actually didn't expect the see this much temp drop.



Jim
 
I have a high flow high boost intercooler I bought from MCS midwest diesel in eureka Mo at a pretty good price my egts dropped about 100 degrees cruising at about 70 to 80 mile per hour it also has the square design and has about 7 or 8 more tubes than stock. I dont know if it helped in power because I also chaged injectors,installed electric fans and adjuted the valves but I went from 518hp to 604. For more info call keith at 636 938 1118 at MCS midwest diesel. He also sells hot rod vp44s.
 
The pics are not very good on my puter. To dark.



How much has it shown on the dyno, Jim? The 2 things I/we would like to know is how much $ and how much HP? For 9 or 10 secs the egt's don't matter. We's all bout go fast.



. . Preston. .
 
I don't know on the price, that is a Piers question and I haven't been on the dyno either, I don't have free run of one. I guess it all depends on if it (the motor) likes the cooler temps enough to burn some more fuel... ... sorry the pics are dark.



Jim
 
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On a dyno run the engine will always like the cooler air better. We've seen 40 HP difference with a 50 degree drop. Please let us know as soon as you do. This could be a big thing in the HP wars.



. . Preston. .
 
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There are a couple of things that I want to see on the dyno also, temps being the biggest. There are a few things that I have been doing that first strike you as a bit unusual, one being that the air temps between valet and full power are only 10 degrees hotter at the hat 140 full fuel during the day vise 130 in valet(water off) but you pushing twice the fuel, when you do this the big turbo makes 10 psi of boost by it's self and a total gain of 15 but I am bleeding off air via pop offs as I quite sure it will hit 100... ... I know I want to try it capped off too :-laf



Jim
 
A little update on the cooler! There are actually two versions of the cooler that were produced for R&D, I'm still testing things on this one to get it more like second nature to me on a day to day basis, the second one will be shipped to me next week and I will test the two against each other to determine if one is better than the other, the better of the two will go into production in the very near future. The question was on the differences of the two would the pressure drop be too much, well we know at 60 psi there is a 4 psi pressure drop, which means it's good for flow as well as keeping air in there long enough to cool it properly.



The things that I'm thinking of on this one verses the stock cooler are that the stock cooler is restrictive for a reason... . to hold the air enough to cool it, but if you hold too much then the charger/s just heat the air up more so you finally gain no advantage, you can really hear this coming off boost as you can tell the chargers aren't pushing as hard. If any of you have heard my truck come off boost on the dyno you know what I mean, almost barks the turbo's



The pain in the design was getting all the tabs/bracket holes ect to work as near perfect as the stock one for you the end customer. What I would like to know from you'll is would you want the cooler to come painted like this one or would you want it aluminum looking for appearence and a little better heat loss.



Jim
 
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