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azgolfrat
11-04-2020, 07:31 PM
Hey Guys,

Got an '03 I've rebuilt , adding a JT-V7 supercharger....lots of work, but great fun. Got the the kit from ADTR in So. Cal. - Chris (the man there) has been great helping.

BUT... there is a coolant hose, about 7 inches; not the large upper radiator, or the long lower radiator , but the short one that goes from the thermostat housing to the port entry near the PS fluid pump. It has a stretched out "S"shape to it

Any idea how/where to get one or make one?
03Merc
11-04-2020, 08:30 PM
https://uploads.tapatalk-cdn.com/20201105/e7a5ab0ffddd3eeabf0de8fcb51bf9 38.png

This could be it, or match it up to a hose at a local auto parts store.


Sent from my iPhone using Tapatalk Pro
azgolfrat
11-04-2020, 09:57 PM
https://uploads.tapatalk-cdn.com/20201105/e7a5ab0ffddd3eeabf0de8fcb51bf9 38.png

This could be it, or match it up to a hose at a local auto parts store.


Sent from my iPhone using Tapatalk Pro



Do you know if the hose in the pic you sent is 1.5 inch ID....I found one that was 1.25 ID. No bueno.
Grimrepairman
11-05-2020, 07:52 AM
Mine blew out a few months ago. I was able to find a hose that had a section that would work at my local Napa.
Napa #8349. Make sure you take the spring out of the old hose and put it in the new one.
Marauder short radiator hose https://imgur.com/gallery/IYXWz0G
azgolfrat
11-05-2020, 07:56 AM
Mine blew out a few months ago. I was able to find a hose that had a section that would work at my local Napa.
Napa #8349. Make sure you take the spring out of the old hose and put it in the new one.
Marauder short radiator hose https://imgur.com/gallery/IYXWz0G

Excellent input my friend..thanks so much
fastblackmerc
11-05-2020, 12:44 PM
Had the same issue. Advanced Auto Parts has a Dayco E72103 hose the is the correct diameter and one end has the correct bends. As stated, reuse the old spring.

Dayco P/N: E72103 is the lower radiator hose for a 2004 Lexus GS300.
fastblackmerc
11-06-2020, 11:56 AM
I just finished rebuilding the cooling system. New hoses, clamps, flush, new antifreeze, new Reisch Performance 170 degree thermostat, new crossover tube O-rings.

FYI here are the hoses that I used:

Lower radiator to thermostat housing - Gates 22812
Crossover to top of radiator - Gates 22810
Crossover to thermostat housing - Dayco C70986
Oil cooler to thermostat housing - Dayco E72103 (you will only need a portion of this hose)

I do have a MartyO tune that is adjusted per Reisch Performance instructions.