OB6
09-24-2023, 12:19 PM
Several people including myself have opted for the Tilton Triple Reservoir below, and many have made accurate comments about the chambers not being sealed. This post is intended to help those who may have reservations about using this product, but otherwise like the unit.
190386
Preamble... (i.e. stuff most probably know, but may be helpful for others)... as you can see, it clearly says "For Racing Use Only". Many aftermarket manufacturers make this disclaimer for legal purposes (e.g. exhaust systems that eliminate cats) and some also do it for functional reasons as Tilton does here due to the unsealed chambers. This creates problems for street use because the fluid will become compromised by water absorption during the typical 1-2 year fluid change intervals (I suppose this could create legal exposure for Tilton without the disclaimer). This is typically not an issue in race applications because fluid changes are a regular part of maintenance between events.
I bought it anyway because I like the design, quality, and looks of the unit. However I needed to do something about the vented caps. This came up in a thread yesterday, so it was a reminder that I needed to get it done. Might as well be today.
Simple and cheap solution ($12).
Take apart the Tilton cap:
190387
Grind down the inside of the cap so it's flat:
190388
Insert a Dorman 42081 Master Cylinder Gasket/Diaphragm. I think this is from a Chrysler of some sort. Note: you can't just plug the hole in the cap and call it a day. The solution needs to accommodate the fluctuating fluid levels in the reservoir, which is what the diaphragm does.
Place the diaphragm in the cap and you're done.
190389
It's slightly loose in the cap and I suppose you could secure it inside the cap with a couple small drops of RTV or something, but I'm just keeping it as-is. It sits nicely on the reservoir opening.
190390
190386
Preamble... (i.e. stuff most probably know, but may be helpful for others)... as you can see, it clearly says "For Racing Use Only". Many aftermarket manufacturers make this disclaimer for legal purposes (e.g. exhaust systems that eliminate cats) and some also do it for functional reasons as Tilton does here due to the unsealed chambers. This creates problems for street use because the fluid will become compromised by water absorption during the typical 1-2 year fluid change intervals (I suppose this could create legal exposure for Tilton without the disclaimer). This is typically not an issue in race applications because fluid changes are a regular part of maintenance between events.
I bought it anyway because I like the design, quality, and looks of the unit. However I needed to do something about the vented caps. This came up in a thread yesterday, so it was a reminder that I needed to get it done. Might as well be today.
Simple and cheap solution ($12).
Take apart the Tilton cap:
190387
Grind down the inside of the cap so it's flat:
190388
Insert a Dorman 42081 Master Cylinder Gasket/Diaphragm. I think this is from a Chrysler of some sort. Note: you can't just plug the hole in the cap and call it a day. The solution needs to accommodate the fluctuating fluid levels in the reservoir, which is what the diaphragm does.
Place the diaphragm in the cap and you're done.
190389
It's slightly loose in the cap and I suppose you could secure it inside the cap with a couple small drops of RTV or something, but I'm just keeping it as-is. It sits nicely on the reservoir opening.
190390