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Old 06-09-2012, 11:00 PM
Carl_NH Carl_NH is offline
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Added Transmission Cooler On Ferris ZTR

Installed a B&M 70255 Transmission cooler on my Ferris IS2000 25/52 today. Unit has 60 houes total on it in two years (residential use). I was concerned about the operatinig temp 180* @ 75* ambient and the fact the Ferris has added these to the IS3100 this year (and all bigger machines IS5100 series).

I have the Hydrogear 12CC pumps and Parker wheel motors. Also I tow a Trac Vac in the fall for leaf collection which puts more strain on the system. The oil on my system was dark, smelled like roasted nuts so I R&R the filter and replaced with new 15-50 Mobil 1 (1.75 qts) last weekend.

Ordered the B&M 70255 cooler this week and installed today and now the Hydro temps are 138-140 @ 75* ambient temp and the oil is clear now (no bubbles) now. Which in my estimation is a good thing..

Attached are some pics of installation, note I raised the resevior tank to the top position to clear the engine by 3" and allow the cooler oil level not exceed the highest point in the tank.

Everythiing works great and a 40* reduction in fluid temp from 180 to 140 can only be good for the pumps and motors.

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Old 06-10-2012, 12:29 AM
weldondl weldondl is offline
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Nice install thamks for shareing. You may start a trend.
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Old 06-10-2012, 10:23 AM
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fixer67 fixer67 is offline
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What about getting two 12 volt computer fans for the cooler? That should drop the temp even more. Easy to wire up. Use the lead for the fuel solenoid to trip a relay and run the fans though the relay fused to the battery is how I would wire it. I like to add ones and upgrades.
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Old 06-10-2012, 11:40 AM
Carl_NH Carl_NH is offline
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I tried to replicate the IS3100 install above the motor - it appears to work well dropping the temp 40*. The fans are a good idea and would work even better.

I also think the return flow rate isnt so high to need more cooling. I I was doing a "factory style" I would probably have gotten a dual coil cooler and routed each pump return line indepently.

Thanks all for the replies.

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Old 06-10-2012, 12:00 PM
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grass_cuttin_fool grass_cuttin_fool is offline
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Looks good...and i dont know why they all dont have them...its gotta help them alot
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Old 06-10-2012, 12:04 PM
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TLS TLS is offline
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180 degrees sounds cool to me.

Get it too cool, and it won't steam off any condensation.

Too many guys do this to their cars.

Replace a 190-200 degree thermostat with a 160 and the engine never gets hot enough to evaporate any condensation.

I think ZTR's should come with a hydro oil temp gauge.
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Old 06-10-2012, 12:54 PM
Carl_NH Carl_NH is offline
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Good Point TLS,

Never thought about that - I know what you refer - I had white condensation inside the cap each time after mowing before I changed the fuild and filter.

In the 2 hours I ran after changing the hydro oil and filter, before I did the cooler install there was no more white condensation.

This was an 09 leftover unit I bought in June 2010 and I think it had been around for at least a year inside and out as when I got it the engine oil was dirty and gassy from running it around so I changed the engine oil at 5 hrs with SAE 30 and then at 58 hours went to Mobil 1 in the engine.
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Old 06-10-2012, 05:08 PM
Carl_NH Carl_NH is offline
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Just a coupe additonal shots today in the sun, also verified on startup oil flows into the tank (no drainback).

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Old 07-19-2012, 12:03 PM
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LuvMyFerris LuvMyFerris is offline
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Nice job. The engine intake grill below the cooler, is the air coming up or pulling in?

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Old 07-19-2012, 12:24 PM
Carl_NH Carl_NH is offline
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Thanks for the comment.

The 25HP kawasaki pulls air in the top and out the bottom so cool air is flowing through the hydro cooler.

It's not that warm and the top of the engine has plenty of room to pull in "clear air" also so I dont have a concern about this impacting the engine cooling.

They do this on the 3100 now as standard if you check the latest machines on the Ferris site.
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