ls swap overheating problems and solutions
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- čas přidán 13. 06. 2023
- In this episode we break into the ls engine cooling system and do some mods to the heater hoses and delete thermostat to make this ls engine stay cool in the carolina heat!
#lsswap
Man this is great did it to my LS pump temperature now running in the 170s 👍 thanks for the video and hopefully you got all the shellac clean out.
the problem your having is you need to add an expansion tank to the system on the heater hose side the one closest to the big water inlet side I think it's a 3/4 inlet and that's where you run your steam pipe too and your overflow as well just like on stock setup
Wrong 🤦♂️ most LS swaps don’t have an expansion tank and they work fine
@@tylerseabook9423 It could be because how they have it setup that allowed the air to escape from the radiator and fill the block unlike a traditional Chevy which full from the bottom hose up to the thermostat by adding the expansion tank you get around this problem on other side of the thermostat it filling the block up first and then it works it way up to the top the hose and backwards filled Then you can finish talking it off from the radiator itself
got that thing running cooler than fonzie
Happy days!
Going to try it on my monte carlo
It's still working great on my ranger. Definitely worth doing if you are having cooling issues
@slaterrockshop4564 going to try tomorrow
@slaterrockshop4564 i bought plug but falls threw
@montecarlo6.0turbo I would see if the part store has something bigger. It worked for me but there could tolerance difference in water pumps
How did you bleed it out
Can u still have the heater lines hooked up doing this or no? I have a gen 4 5.3 in a 96 blazer stock style radiator but its a 3core im having circulation issues at idle stays cold when driving
No you can't. I bypassed the heater core. If you are only having trouble at idle I would suspect it could be a cooling fan issue. Is it electric or mechanical fan?
@@slaterrockshop4564 dual electric fans
And both fans are new 12v 80w i have a relay on each only 30 amps a peice
What's the part number of the fan you're using?
Spu-ix-30102040
Looping the lines still work?
I've looped them before without issue but for some reason it was letting too much hot water return to the engine. I ended up blocking both ports off and solved my overheating issue
Where do you have your steam port plug into now ? Since you deleted the loop?
I ran the steam port back to the radiator. My radiator has a 5/8 heater hose return port. I used reducers to neck down the 5/8 to 1/4 for steam port
Also, if your rad doesn't have another port you can also buy an adapter off Amazon that goes in upper radiator hose.
Got it thanks