Toyota supra mk3 part # 8601-8808

btwilson86 · 11-13-2014, 01:56 PM

Are you talking about your heater control valve? The part with a vacuum line and 2 coolant lines running to it? If so, that shouldn't cause the car to overheat, but bypassing it could help lower coolant temps because now coolant can travel freely through your heater core which is essentially a second, smaller radiator.

With it bypasses you should still have a working heater, although IIRC you won't be able to completely stop hot air moving through your vents.

Also, the part number you listed is actually the date range for that diagram, Jan 86-Aug 88 (8601-8808), the part number for the piece I think your talking about is 87240-14140

11-13-2014, 01:56 PM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Are you talking about your heater control valve? The part with a vacuum line and 2 coolant lines running to it? If so, that shouldn't cause the car to overheat, but bypassing it could help lower coolant temps because now coolant can travel freely through your heater core which is essentially a second, smaller radiator. With it bypasses you should still have a working heater, although IIRC you won't be able to completely stop hot air moving through your vents. Also, the part number you listed is actually the date range for that diagram, Jan 86-Aug 88 (8601-8808), the part number for the piece I think your talking about is 87240-14140 __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels Last edited by btwilson86; 11-16-2014 at 09:41 PM.