SR20DET Leaking Coolant From Slave? Need Help! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lthomson96 · 05-03-2016, 10:30 PM

Hi! First post of many most likely. This forum has been super helpful but now I seem to have a problem pretty unique so here goes:

TL;DR: Coolant leaking from slave cylinder rubber boot (from inside bellhousing).. crack/hole in block or I missed a hose thats leaking INTO the trans??

I picked up an SR20DET swapped 240 a couple weeks ago. It needed a headgasket so I changed it, super smooth, runs great. Problem is, it leaks coolant/water from the slave cylinder rubber "seal" on the transmission!!

We've looked all over and can't find a hose that's leaking above (though we could have been more thorough) but there's ZERO fluid coming down the sides, its only leaking from the rubber seal around the slave cylinder.

I'm wondering if there's a hole in the block allowing coolant to get into the bellhousing??? Seems super unlikely but this is a weird problem.

It has a built block, approx 500miles on it. CP Pistons, Manley rods.. wasn't built by me but seems solid. And the car hauls ass...

Going to do a compression test soon but I'm 99% sure its all good.

Please help!!

05-03-2016, 10:30 PM	#1
lthomson96 Join Date: May 2016 Location: Alberta Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	SR20DET Leaking Coolant From Slave? Need Help! Hi! First post of many most likely. This forum has been super helpful but now I seem to have a problem pretty unique so here goes: TL;DR: Coolant leaking from slave cylinder rubber boot (from inside bellhousing).. crack/hole in block or I missed a hose thats leaking INTO the trans?? I picked up an SR20DET swapped 240 a couple weeks ago. It needed a headgasket so I changed it, super smooth, runs great. Problem is, it leaks coolant/water from the slave cylinder rubber "seal" on the transmission!! We've looked all over and can't find a hose that's leaking above (though we could have been more thorough) but there's ZERO fluid coming down the sides, its only leaking from the rubber seal around the slave cylinder. I'm wondering if there's a hole in the block allowing coolant to get into the bellhousing??? Seems super unlikely but this is a weird problem. It has a built block, approx 500miles on it. CP Pistons, Manley rods.. wasn't built by me but seems solid. And the car hauls ass... Going to do a compression test soon but I'm 99% sure its all good. Please help!!