Guys,



So the 13b RE Cosmo uses the same oil pressure regulator as the FC (70psi)



This is what I heard. So this engine has a little of FC and FD.



Anything other interesting facts I should know about.



I'm thinking off getting teh oil pressure regulator modified if it is the same as the FC to be able to handle 2 oil cooler to cope with a pressure drop it will cause.



C

yeah its a mutt between the fc and fd.

LOL



I just got a response from pineapple racing. They can modify a new one or I can use an FD?



I thought FD will be too hight of pressure..



What do you think?



Carlos

i run the 115psi bypass in my cosmo 13b, need to go with a thinner oil then 50w or 20w50 now though due to the high ass presure when oil is cold.

How are you shimming the front regulator?

2 shims from mazdatrix that came with the 115 psi bypass

Oh I thought you were using the FD one. You are using the adjustable one from them.

if you have a look at a regulator, theres a pin that holds it together (ive never pulled one apart, but the spring and plunger are available for the non fd), and then it comes apart. sooOooo it looks like its possible to pull it apart and shim the stock spring, 80-85 psi would be good. fd is something like 100...



plunger is 0221-14-115

non fd spring is 0221-14-116

Are you talking about the rear one?



Just wanted to keeps this simple https://www.nopistons.com/forums/pub...IR#>/smile.gif

mazdatrix sells 3 differnt bypass kits from stock to full out race at 115-120psi bypass like the one i have in the car, there not very expencive and work well , it kinda takes the guess work out of it ya know and worth the couple extra bucks to not have a headache in the future to the unknown about matchin the frount and rear and all that junk.



randy