5 link rear sandcar suspension

[fabr]

great! a larger or 2 pass radiator is easy enough to swap in. glad it ran good and those swimming holes are nasty water lol  so now you can make it for the sept ride!

Before you swap out the radiator make SURE you have a high quality fan. I will only use SPAL fans. BTDT with look alikes. The CFM rating tells the story.   

[BrianN]

Too big of a ratio gap between 2nd and 3rd. I also need to research the safe Max rpm of a stock 2.5. I didn't expect the old used stock clutch to work, but it did. I couldn't push it hard for very long at a time, because the engine temp would go up.

[dsrace]

i agree with fabr......spal fan all the way. cfm rating is key.  what temp did it hit at its hottest?  if your running the stock ecu then it has a factory rev limiter. if you have an aftermarket ecu then you can set it. if you can set it then i would say 6k rpm would be safe enough until you find some hard data. there a few suby guys on here that should be able to tell you.

[BrianN]

I just ordered a radiator twice as big. Dual fans. It would reach 210-220. I would just stop and the fan would take it back to 190 pretty fast. I never turned it faster than 4000 rpm. I have the Stinger ecu from John.

[big dave]

best bang for the buck. works great on my 2.5 suby. Aluminum 3 fans. I only run two fans and it cools it great. my scope gets in the way of the center fan. I run the 219.99 one the fans mounting system is better on it.  This is on Ebay.

[BrianN]

Thanks Big Dave. I had my finger on the "buy now" button on that radiator, but it was a little too big for my space. I bought a 16" X 29" X 2" with dual fans. I am guessing that yours is turbo. If so, do they make more heat than n/a? I plan on calling Outfront about safe rpm, but what is your opinion?

[big dave]

Thanks Big Dave. I had my finger on the "buy now" button on that radiator, but it was a little too big for my space. I bought a 16" X 29" X 2" with dual fans. I am guessing that yours is turbo. If so, do they make more heat than n/a? I plan on calling Outfront about safe rpm, but what is your opinion?

Yes mine is turbo. I would thank the add heat from the oil retuning for the turbo would add heat. as for rpm limit. mine is set at 6800 from outfront.

[dsrace]

higher cyl pressure does increase heat, on top of hotter exh temps and oil temps etc etc. this is where a great innercooler and e85 come into play for best results.  i run a 2 core 2 pass radiator on my turbo 4cyl. i believe it's  a 2 core, 31" x 16 or 17" tall and 2 pass.

[fabr]

The one pass or two pass debate to this day still rages on.

[dsrace]

The one pass or two pass debate to this day still rages on.

  you bet your      it is   

[Carlriddle]

I run a ga scirocco single pass. I upgraded fan (still didn’t shell out spall $$) but cooling is no problem even with the turbo now. I run separate oil cooler in front of rad. And on e85 too.

Really wish elec problem didn’t cut my trip short by a day or so. It was just getting into the fun boost area! 

[dsrace]

carl....that did suck ! i believe the rec reg did it but i dont know for sure. i know you've got a damn busy 4 weeks ahead of ya but remember to yank that out and mail it to have it checked by bazzaz atleat. worst case they throw it away, best case they figure it out.

i just pulled mine out of the th'er last thurs evening.  i will be pulling the motor next week i believe. if enemy get that head ready then i will be swapping to a better head. i WILL BE setting cam timing with a degree ring as the head and block were decked .007 or .010 combined. i cannot find the paper work that i did save with that info. apperantly using the e bar method doesnt really work once the head and block have been decked. enemy figure out he was almost 1 tooth off checking with a degree ring.

[fabr]

The one pass or two pass debate to this day still rages on.

  you bet your      it is   

From Stewart water pumps site:
Double pass radiators require 16x more pressure to flow the same volume of coolant through them, as compared to a single pass radiator. Triple pass radiators require 64x more pressure to maintain the same volume. Automotive water pumps are a centrifugal design, not positive displacement, so with a double pass radiator, the pressure is doubled and flow is reduced by approximately 33%. Modern radiator designs, using wide/thin cross sections tubes, seldom benefit from multiple pass configurations. The decrease in flow caused by multiple passes offsets any benefits of a high-flow water pump.

[BrianN]

Is there a difference between double pass and dual row?

[fabr]

yes,a dual row/2 row can be either a single pass or a double pass.