NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Ported 93 Fd Engine To Cosmo Engine Specs (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/ported-93-fd-engine-cosmo-engine-specs-19022/)

Judge Ito 06-14-2003 05:32 AM

I ported a 93FD engine to the Cosmos engine specs. Basically I made the FD ports just as large as the J-spec cosmos ports. Side by side you can't tell them apart. This way if your using the cosmos lower intake manifold it will match the FD engines ports. I personally like the FD plates, they are reinforced better then the Cosmos plates. If People want to install a cosmo engine in their FD but dont want the motor mount problem with the original cosmo plates, they could use this other way(FD engine ported to cosmo specs.) I'll take pics soon. Vosko was at the shop but was so excited about his linelock system and trying it outside the shop that he forgot to take pics of the FD ported plates.

TheCamel 06-14-2003 05:45 AM

Judge, what about port matching the FD lower housing to the new port?

vosko 06-14-2003 09:45 AM

yeah i really did totally forget. if its there the next time i come. i'll take pictures

93 R1 06-14-2003 11:52 AM

cool

MAZDAROTARYPOWER 06-14-2003 01:09 PM

please post the pics soon jon!

j9fd3s 06-14-2003 03:59 PM

sweet judge! cosmo = cool



mike

Judge Ito 06-14-2003 05:42 PM


Originally Posted by TheCamel' date='Jun 14 2003, 10:45 AM
Judge, what about port matching the FD lower housing to the new port?

I'm not understanding your question. Ask me again..

j9fd3s 06-14-2003 05:52 PM


Originally Posted by Judge Ito' date='Jun 14 2003, 02:42 PM
I'm not understanding your question. Ask me again..

i think he means lower intake?



mike

TheCamel 06-15-2003 07:22 AM


Originally Posted by Judge Ito' date='Jun 14 2003, 02:32 AM
Basically I made the FD ports just as large as the J-spec cosmos ports... This way if your using the cosmos lower intake manifold it will match the FD engines ports.

What I was asking is if you can port the FD's lower manifold to match the new cosmo ports, I don't know why I had housing on the brain.

Judge Ito 06-15-2003 07:11 PM


Originally Posted by TheCamel' date='Jun 15 2003, 12:22 PM
What I was asking is if you can port the FD's lower manifold to match the new cosmo ports, I don't know why I had housing on the brain.

OK know I understand. You can't port the FD lower intake manifold to match the cosmos front and rear plates. If you try to port match the FD lower manifold, you will find yourself running out of porting space and porting right into the lower manifold bolt. Cosmos ports are decently large.


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