Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: leon on January 03, 2008, 11:39:52 AM

Title: Saw this - Extended metal gasket? Eh.
Post by: leon on January 03, 2008, 11:39:52 AM
Okay while browsing at work i saw this (http://img159.auctions.yahoo.co.jp/users/3/5/2/0/kondousyoukai-img360x480-1196960650020818_01.jpg) and wonderd.... what exactly is the point behind this lump of metal. if it was a cylinder engine i could understand doing that on the headgasket but why with a rotary would you extend the tube lengh?
Title: Saw this - Extended metal gasket? Eh.
Post by: BlitzBoy on January 03, 2008, 12:06:06 PM
I have seen a gasket like that where there was holes to put extra injectors.
. On NA rotary it might affect the torque and power curves But no real point on a turbo rotary
Title: Saw this - Extended metal gasket? Eh.
Post by: Nitronige on January 03, 2008, 01:01:36 PM
not sure about the metal ones, but i have seen plastic spacers, they are suppose to limit heat transfer from the engine. Whether it works or not, i dont know.
Title: Saw this - Extended metal gasket? Eh.
Post by: leon on January 03, 2008, 01:11:45 PM
I saw the plastic ones but nothing as "wide" as this one. it seems odd that its touted for the FD as well :2Confused
Title: Saw this - Extended metal gasket? Eh.
Post by: Bobfish on January 03, 2008, 01:12:05 PM
I dont think thats an FD UIM. Could be an adaptor plate. Also may give you more clearance under teh UIM for some reason you might need it...
Title: Saw this - Extended metal gasket? Eh.
Post by: leon on January 03, 2008, 01:15:27 PM
its defo an FD uim, the LIM im not 100% sure about as ive not had one in my hands only seen it fitted to the car :Thumbs-up the clearance is somthing i thought about too! but once the rats nest is gone theres liberal amounts under there
Title: Saw this - Extended metal gasket? Eh.
Post by: Bobfish on January 03, 2008, 01:18:52 PM
sorry, i meant LIM. I\'m 90% sure thats not an FD LIM, hence could be an adaptor plate to fit an FD UIM to a something else LIM. Not sure why youd want to though!
Title: Saw this - Extended metal gasket? Eh.
Post by: leon on January 03, 2008, 01:31:05 PM
Your right! its an FC LIM that solves that mystery.

Way to go team! :Giggle
Title: Saw this - Extended metal gasket? Eh.
Post by: shaunwil on January 03, 2008, 06:22:58 PM
Was going to say it would drop the peek power point down the rpm range if it was just a spacer on a N/A car.

Shaun
Title: Saw this - Extended metal gasket? Eh.
Post by: Hayward North on January 03, 2008, 07:19:27 PM
The plate inbetween the uim and lim im sure is for aditional injectors, on the side you cant see there is holes to mount injectors.
Seen em on crescent.
I could be wrong :)