Hey Kyle awesome videos, thanks mate 🙌. I've imported a 20b to rebuild for FD build. (original A code, mazda block, 60,000kms). All parts within spec! Sounds like i lap my plates regardless, so good advice. Any tips on 'minimum' other replacement parts? Plan to reuse rotor housings but replace all bearings, stud, all new seals, balance & clearance. Turbo half bridgeport 500-600 rwhp goal. Thanks again! Jason
Hey kyle how do you remove the oil vent nipple that is pressed into the top of the intermediate housing by the oil neck? I need to remove it so I can finish lapping my housings. Other than lynn e hannover you are the first to talk about resurfacing that I am aware of. Used to be shunned back in the day but I always thought otherwise.
i was wondering if the rotary engine could benefit from some of the stuff Lake Speed Jr. (Motor oil geek) has done for piston engines. Specifically, a plateau hone technique for the side plates to up oil retention. I have no idea to accomplish this (well, I sorta do have ideas), maybe super coarse lapping compound and then a fine one to produce the plateau profilometer reading? Or a coarse surface grind and then fine lap?
I watch your videos mostly because you lap housings and understand why it needs to be done. What is it with the rotary community and thinking that anytime a part gets touched with any sort of abrasive it is ruined and out of spec.
@Liquorpuss lol. It's crazy. As far as I can tell, it's mainly people, not building engines talking about something that they have done. Every rotary shop I know laps housings if they need it and it's a hundred percent success rate. No re nitride. Just clean it properly and build a good engine. Lol
@PTRTHAUS in 20 years of building engines and working with Mazdatrix we had zero issues with lapped housings. So there was no need to test things that work fine basically evey time. The internet builders seem to think it's a mystery or issue but lapping has been a regular since the 70s. Just clean everything properly.
@weebingdanperformance4594 I'd also like to point out that you almost never have side housing wear be the reason a engine comes apart. It's ninety nine percent of the time nothing to do with the side housings and any type of wear... lapped or new . It's became a huge internet topic, but on the industry side. Most engines, piston or rotary get resurfaced for a proper rebuild.
Hey Kyle awesome videos, thanks mate 🙌. I've imported a 20b to rebuild for FD build. (original A code, mazda block, 60,000kms). All parts within spec! Sounds like i lap my plates regardless, so good advice. Any tips on 'minimum' other replacement parts? Plan to reuse rotor housings but replace all bearings, stud, all new seals, balance & clearance. Turbo half bridgeport 500-600 rwhp goal. Thanks again! Jason
Hey kyle how do you remove the oil vent nipple that is pressed into the top of the intermediate housing by the oil neck? I need to remove it so I can finish lapping my housings. Other than lynn e hannover you are the first to talk about resurfacing that I am aware of. Used to be shunned back in the day but I always thought otherwise.
On a pineapple racing video he says cut it off and tap it for a new one.
@@jo-qp7mz Awesome man. I may do that. It kinda looks like a torch might get it out like it's been brazed in place.
i was wondering if the rotary engine could benefit from some of the stuff Lake Speed Jr. (Motor oil geek) has done for piston engines. Specifically, a plateau hone technique for the side plates to up oil retention. I have no idea to accomplish this (well, I sorta do have ideas), maybe super coarse lapping compound and then a fine one to produce the plateau profilometer reading? Or a coarse surface grind and then fine lap?
just lap the plates together with valve grinding compound, don't over think it too much.
Why does the water stain on the left plate look like that famous Bob Marley image?
I watch your videos mostly because you lap housings and understand why it needs to be done. What is it with the rotary community and thinking that anytime a part gets touched with any sort of abrasive it is ruined and out of spec.
Idk it's toxic tho...
@Liquorpuss lol. It's crazy. As far as I can tell, it's mainly people, not building engines talking about something that they have done. Every rotary shop I know laps housings if they need it and it's a hundred percent success rate. No re nitride. Just clean it properly and build a good engine. Lol
Do you hardness test the housing before and after?
@PTRTHAUS in 20 years of building engines and working with Mazdatrix we had zero issues with lapped housings. So there was no need to test things that work fine basically evey time. The internet builders seem to think it's a mystery or issue but lapping has been a regular since the 70s. Just clean everything properly.
How much do you guys charge for a set of t2 irons to lap?
I checked online can't find price?
@@jo-qp7mz 130 per face. Plus shipping. Quick turn around
@@jo-qp7mz www.kylemohanracing.com/services
Have you or do you know anybody that had tried using irons that was lapped and has no nitrite left?
@weebingdanperformance4594 yes. Me. I ran some way past recommended depths. In most cases, they were fine and wore almost the same as any others.
@weebingdanperformance4594 I'd also like to point out that you almost never have side housing wear be the reason a engine comes apart. It's ninety nine percent of the time nothing to do with the side housings and any type of wear... lapped or new . It's became a huge internet topic, but on the industry side. Most engines, piston or rotary get resurfaced for a proper rebuild.
@@KyleMohanRacing how many thou were you past the tolerance ?
Does this affect the endfloat when you lap the housings as you are making the engine slightly shorter?
@KyleMohanRacing thansk for the info your a wealth of knowledge!
Will I ever own rotary? No
Is knowledge a good thing? Maybe