NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Rotary Engine Building and Porting FAQ Section (https://www.nopistons.com/rotary-engine-building-porting-faq-section-85/)
-   -   What's Absolutely Necessary When Rebuilding? (https://www.nopistons.com/rotary-engine-building-porting-faq-section-85/whats-absolutely-necessary-when-rebuilding-12637/)

Judge Ito 02-24-2003 05:36 AM

Ill keep the pin removal secret to my self for now.. I'm looking back at it, I think the answer is worth money https://www.nopistons.com/forums/pub...IR#>/smile.png

rx7tt95 02-24-2003 10:24 AM

Great...where do I paypal the money? I'm doing everything on this engine myself Ito, because I'm not 100% trusting of the local shop's ability. I really don't want to screw my housings up trying to get the pins out. Any help will really, really be appreciated. Do you sell Atkins seals any cheaper than Atkins itself? Just curious given the amount of seals you seem to be buying https://www.nopistons.com/forums/pub...IR#>/smile.png

Judge Ito 02-25-2003 06:48 AM

Ok friends, Here is the easiest way I have found to pull the pins out the diffusers. Just like everybody else I have tried every way in the book to destroy this pins, and found little success. Until NOW...



Take the MIG-Welder and WELD 1 round DOT on top of the pin, then weld a second DOT on top of the first dot, then a 3rd DOT on top of the first two dots, by this time you have a small row of welded dots. Take a pair of Dykes plyers and go to the first welded dot and just grab it with the dykes,twist and pull up. Works like magic. If you don't have a welder,, I would suggest to find a shop and help you with the welding of the pin. Until somebody comes up with a special type of puller, this is the easiest way I have found.



Yes I sell the Atkins apex seals cheaper then them...

MAZDAROTARYPOWER 02-26-2003 11:41 AM

this some good info, since i should be getting a cosmo soon myself!

rx7tt95 02-26-2003 07:59 PM

I'm going to start a new thread about rebuilding my cosmo, just to give everyone a head's up. I'll post images and info as I go along. I'm currently polishing the housings along with a few other items. I haven't decided on a color for my side plates...if I can get some sort of "soft" gold or titanium color, maybe bronze to match my rims, LOL, I'll go that route. If not, black it is!

Thanks to all for the info.

Michel

Cheers! 02-27-2003 11:33 PM


Originally Posted by Judge Ito' date='Feb 25 2003, 04:48 AM
Ok friends, Here is the easiest way I have found to pull the pins out the diffusers. Just like everybody else I have tried every way in the book to destroy this pins, and found little success. Until NOW...



Take the MIG-Welder and WELD 1 round DOT on top of the pin, then weld a second DOT on top of the first dot, then a 3rd DOT on top of the first two dots, by this time you have a small row of welded dots. Take a pair of Dykes plyers and go to the first welded dot and just grab it with the dykes,twist and pull up. Works like magic. If you don't have a welder,, I would suggest to find a shop and help you with the welding of the pin. Until somebody comes up with a special type of puller, this is the easiest way I have found.



Yes I sell the Atkins apex seals cheaper then them...

i'm not sure how big the diffusers are... but from the top of my head i woudl drill, then nap with some NPT sized tap.

Find a bolt/plug for your tap size... then get your pilers and pull

setzep 02-28-2003 07:57 PM

That would be one hellofa small NPT tap, not sure if they make them that small. The whole problem with drilling/tapping is the pin is very hard, it says "**** you" to most drill bits.

Cheers! 02-28-2003 10:40 PM

hrm... i never realized they were that small... i've never opened up an engine before

Judge Ito 03-01-2003 05:53 AM


Originally Posted by setzep' date='Mar 1 2003, 01:57 AM
That would be one hellofa small NPT tap, not sure if they make them that small. The whole problem with drilling/tapping is the pin is very hard, it says "**** you" to most drill bits.

I see you have tried the drill... https://www.nopistons.com/forums/pub...O_DIR#>/11.gif

MAZDAROTARYPOWER 03-01-2003 09:24 AM

i like Ito's way the best and will use it for now on!


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