rx8frank

Yes please Rotary Crazy, my friend would love to see that....'cause there is not much FB out there with a 20B.

rx8frank

And by the way the rotors will be back in a week or two....stay tune. And for the damage housing in a month.

cajunrx8

That 1st gen RX is going to need sandbags in the trunk to hold it down and get any traction!!!!!
Very cool ****!!! Please keep us updated.

rx8frank

haha....very true

rx8frank

FINALLY....we received everything. The damaged housing received a cermetB coating from JHB in Calgary (Canada) and we had a damaged rotor so we replaced it and all the rotors apex groove were machined to receive 3mm Apex seals from RX7Specialities also from Calgary and bought all the needed pieces for the rebuilt also from RX7Specialities.













More to come......

rotary crazy

whao!, thats beutiful, keep up the good work

I try to get the pics of my friends firts gen rx-7 20b but he sold it to a guy from Puerto Rico

RWagz

That housing looks very nice, just like new!

This is the first time I've been to this thread, so I'd just like to say...damn that 20b is a monster of an engine! I didn't realize just how big it is!

RotaryResurrection

iTrader: (3)

When the non-renesis rotaries blow apex seals, you almost always have damage to the rotor and rotor housing, requiring those parts to be repaired or (usually) replaced. This is because you have a 2mm wide chunk of broken off seal flying around the internals, and at their closest point they come within 1mm of each other...so the seal gets wedged and chews into the other parts. Eventually the pieces get thrown out the peripheral exhaust hole, but not before damage is done.

http://www.rotaryresurrection.com/2n...nt_damage.html

The issue with the renesis is that the seal has a much harder time getting out of the engine. Eventually the pieces will work their way over to the sides of the rotor and get wedged between the rotor and intake/exhaust side ports. This is going to chew the irons up in most cases as well. Since core parts for rennies are not yet cheap or readily accessible on the used market, this means the cost for rebuild will be far higher than that of the older 13b.

rx8frank

Thank you all for the reply and I agree with you RotaryResurrection we were very lucky to find that rotor housing wasn't to much damage but the rotor needed to be replaced.

rx8frank

The next step is to verify, with Racing Beat, if the porting template my friend has in hand if it can be use for the 20B and if yes well....it's gonna be porting time!!! After is to paint the sides and rotors housing. When I'll have pictures I'll post it as soon as I can.

Frank.

Opethdtr

Who ever did the machining on those rotors did a real good job. Keep us posted!

whoneedspistons

iTrader: (2)

awesome...

Nopstnz

pretty..

RotaryResurrection

iTrader: (3)

The 20B uses the same ports as the cosmo RE and FD REW engine, so yes standard porting templates will work fine on the 20b. I have ported one myself.

rx8frank

RotaryResurection you were right for the template so here are the pictures...

Enjoy







It looks like we're doing a street port here.....

rotarygod

Don't be so quick to port out the primary port that large. You may find water! There is no need to go that large on the primaries anyways.

rx8frank

Thanks for the info RG we'll double check

RotaryResurrection

iTrader: (3)

Yes, I also agree that is way too large for a primary. There should be a seperate template for it that is about half that size.

rx8frank

Hi everyone it's been a while since I posted here but as you can see the project is still alive. Since 2007 the work had stop but in the last month the engine now is all assemble and almost ready to run.

here some pictures my friend sent me to show you.

Intake before and after porting.


And a view after porting with rotor.

rx8frank

And now for the secondary intake after porting





The exhaust port also were ported (Before and after pictures)



and all of the rotary housing after the porting

rx8frank

And now..........the engine all put together with a touch of paint. It only missing the intake header because it need to be clean up and chrome it for the pleasure of the eye hehe








Keep looking this thread I'll post new pictures as soon as I have new ones.

rodjonathan

iTrader: (6)

man thats awesome

09Factor

I can think of no better way than to revive a 2 year old thread with pics of a motor.

Nice to see it together.

rx8frank

Very true haha we're not in a hurry for this project

NACer4lyf

iTrader: (1)

ah man that is awesome!