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Thread: Fresh oil cooler, High Deltas? Reply to Thread
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  Topic Review (Newest First)
11-09-2015 08:27 AM
rman Thanks again guys, I'm pretty sure it's completely fixed. Ran her to 95mph up about 1/2 mile at maybe 4-5% grade, hit 13* delta max and dropped to around 8 once I let off.
11-07-2015 09:14 PM
Originally Posted by powerstrokeshellback View Post
When using the cleaners its not unexpected fro some crap to get loose and clog the new cooler. If your 10 degrees or under at 70 unloaded I wouldn't sweat it. If you got a warranty I would have them put in a new cooler
thanks, i think all is well. i can't wrap my head around how the fan fixed anything. Oil is water cooled, water is rad cooled... ECT has stayed about the same, maybe 2* lower. But EOT has improved dramatically.

and thanks for your patience with the Gryphon.
11-07-2015 07:04 PM
powerstrokeshellback When using the cleaners its not unexpected fro some crap to get loose and clog the new cooler. If your 10 degrees or under at 70 unloaded I wouldn't sweat it. If you got a warranty I would have them put in a new cooler
11-07-2015 06:01 PM
rman got my 7.3 fan clutch installed.

i don't get it. at all. But everything so far seems fine.
It's hard to do the test in San Diego, lots of hills and everyone drives 75mph.
So I just romped on it, 75-80, moderate engine load, etc.

Averaged 6-9* delta
Max was 13* and that's running 80mph and immediate decel dropping my ECT.

Before oil cooler deltas were 18-20*... so I2sure it was plugging, but probably not as bad as I thought. ECTs did climb though.
11-02-2015 08:21 PM
rman thanks guys. i get a little... obsessive with a dash of denial and hope haha.

plan to do the BPD 7.3 conversion. Looks like they use the Sever Duty Hayden... 108 on amazon. Anyone know of a better fan or deal?
11-02-2015 09:27 AM
ZMANN despite your normal ECT what we are trying to say is u can't use your delta's as a comparison against a database compiled of trucks that had a properly working fan clutch's

so it's not worth discussing until you get it fixed
either with he BPD conversion , a OEM snowplow or stock clutch
11-02-2015 05:33 AM
rman brand new OEM tstat, new water pump. ECT is dang near perfect
11-02-2015 03:12 AM
HeavyAssault I'd say get a tstat for replacement unless that was done with all the other work.
11-01-2015 11:18 PM
CrazyS0b Stock or 7.3 doesn't matter, you need to fix that issue...

You will run all kinds of strange numbers until that fan is doing its job. It isn't just a matter of pulling air, that fan keeps a consistent air flow through the radiator. The spaces between the condenser, intercooler, and rad create dead spaces where air doesn't flow well. Much like behind the cab on your truck there is a low pressure zone, you get that in between all of those layers as well. As things heat up and need more air flow that fan kicks on (right around 220*) and forces air through.

You will never get consistent deltas without the fan clutch working properly. But... Anything less than 10-15* is acceptable.
11-01-2015 11:11 PM
Originally Posted by jmeaby View Post
Fix your fan then redo the test I have not heard of a bad Ford cooler out of the box I'm sure it has happened but haven't heard of it yet
wouldnt the ECT be high with a bad fan cluth?

should i replace it with stock, or convert to 7.3?

also, i read in another thread awhile ago that someone showed a pretty big variance with their SCT or Edge vs. AI or similar.... which if that were the case... my deltas were never really that bad haha.

Would hate to have all this $$ in my stupid livewire and end up having to add a couple gauges to monitor deltas more accurately.
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