rotor housing resurfacing services
06-09-11, 03:22 PM
#1
rotor housing resurfacing services
setup tooling to offer this service for people who don't want to shell out $600-750 for new housings anymore. the housings will be blasted to remove any dirt and debris from the outside and inside of the housings prior to resurfacing.
i do recommend premixing fuel depending on the mileage of the housings and how thin the walls originally are and after machining. with higher mileage engines the chrome will be thinned to approximately .010-.012" from the original ~.023". if there are chunks of chrome missing, the housings are unrepairable at this moment in time. you can send me pictures if you are in doubt that they can be machined to be good again, the better they are to start with the better the end result is.
in fact i recommend sending me pictures of your housings prior to sending them, i do not want to waste both of our time and your shipping $ on housings that should be replaced. good quality pictures are pretty much a must to gauge the extent of any gouging. smaller apex seal fracture damage is still ok to be machined as well as OMP jet wear lines and apex seal boot gouging to an extent.
the service will be $125 per housing plus return shipping charges from Las Vegas 89118.
you can contact me via PM here or call 702-277-9846.
(both of these housings came from the same engine with 175k miles, the resurfaced housing was in worse condition than the example in the picture)
-Ben
i do recommend premixing fuel depending on the mileage of the housings and how thin the walls originally are and after machining. with higher mileage engines the chrome will be thinned to approximately .010-.012" from the original ~.023". if there are chunks of chrome missing, the housings are unrepairable at this moment in time. you can send me pictures if you are in doubt that they can be machined to be good again, the better they are to start with the better the end result is.
in fact i recommend sending me pictures of your housings prior to sending them, i do not want to waste both of our time and your shipping $ on housings that should be replaced. good quality pictures are pretty much a must to gauge the extent of any gouging. smaller apex seal fracture damage is still ok to be machined as well as OMP jet wear lines and apex seal boot gouging to an extent.
the service will be $125 per housing plus return shipping charges from Las Vegas 89118.
you can contact me via PM here or call 702-277-9846.
(both of these housings came from the same engine with 175k miles, the resurfaced housing was in worse condition than the example in the picture)
-Ben
Last edited by RotaryEvolution; 06-09-11 at 03:49 PM.
06-09-11, 10:01 PM
#5
cracks permeate through the both the chrome and steel sleeves, there is no repair i know of for the cracking that has already formed. it really depends how severe the cracking is if it is an issue or not and how well the engine is cooled, tuned and spark plug heat ranges used. the cracks can be smoothed out so there is no rough edges to wear the seals further but that is about the extent of what i can do.
06-09-11, 11:45 PM
#6
I have a set of RE housings that have apex chatter marks other than that they don't have any deep grooves or any grooving for that matter,would these housings still work with your service if so I'm definitely interested.I also have some 74 12a rotor housings that are real clean with no Chrome missing but the have some weird markings or scratches in a zig zag pattern,its hard to explain but when i run my nail through them i don't feel like they are there.I would also like to know if those could be redurfaced.I would like to send you pictures so you can let me know for sure,I will send them in the following days thanks.
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06-15-11, 06:21 PM
#9
only spot that i have any doubt about is the chattering spot on the bottom of the last picture, if you can get some better pics of that one to see if there is any chrome flaked off.
the chrome will be very thin in some spots but already is as you can see from the rusting in some points. will be usable and will make good compression but apex seal life will be slightly shortened unless premixing.
the chrome will be very thin in some spots but already is as you can see from the rusting in some points. will be usable and will make good compression but apex seal life will be slightly shortened unless premixing.
Last edited by RotaryEvolution; 06-15-11 at 06:24 PM.
06-20-11, 02:17 PM
#11
sorry for not getting back sooner, just got back from vacation.
the housings look ok with the exception of one spot which i can't tell from the pictures whether the chrome is peeled off or is just chattered upon.
if you can run your finger over that spot and tell if there is any sharp edges from the metal peeling and/or some more detailed pictures of that area for any steps in the surface. overall those aren't in too bad of shape for '74-79 13B rotor housings.
the housings look ok with the exception of one spot which i can't tell from the pictures whether the chrome is peeled off or is just chattered upon.
if you can run your finger over that spot and tell if there is any sharp edges from the metal peeling and/or some more detailed pictures of that area for any steps in the surface. overall those aren't in too bad of shape for '74-79 13B rotor housings.
Last edited by RotaryEvolution; 06-20-11 at 02:43 PM.
06-20-11, 04:39 PM
#12
brappppp brappppp
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I am holding a set of 12a housings that look like your handy work, they look awesome. I am willing to sell these for 100 each if anyone wants them, they also have the exhaust port cleaned up pretty well.
06-20-11, 05:04 PM
#13
this is a new service from me, only other shop in the US that offers this service that i know of is Goopy performance in new york so they could be theirs. they have been doing it for years, i started doing it because Goopy does not advertise on this forum and for the west coast owners who wanted something closer and possibly local. as well some people simply still did not know that this was a possible alternative to getting better results from higher mile rebuilds with used housings.
Last edited by RotaryEvolution; 06-20-11 at 05:08 PM.
09-24-11, 04:52 PM
#17
thanks for your feedback, even though they were probably Goopy housings i doubt the outcome is much different between us.
edit: and john the more i look at the pics of your REPU housings the more i believe they are too far gone by the small bits of rust which are obviously from going beyond the sleeve into the steel liner, sometimes it is tricky to get an accurate feel for condition via pictures as in some they look excellent and in others not so much... perhaps one day i will get around to trying nickel-sil plating in which case the housings may be salvaged, but that is still only a thought as it is VERY difficult to get anything to bond with the chromoly surface.
edit: and john the more i look at the pics of your REPU housings the more i believe they are too far gone by the small bits of rust which are obviously from going beyond the sleeve into the steel liner, sometimes it is tricky to get an accurate feel for condition via pictures as in some they look excellent and in others not so much... perhaps one day i will get around to trying nickel-sil plating in which case the housings may be salvaged, but that is still only a thought as it is VERY difficult to get anything to bond with the chromoly surface.
Last edited by RotaryEvolution; 09-24-11 at 04:57 PM.
09-25-11, 05:49 PM
#19
it takes years to get conclusive evidence, for now it is just for people to evaluate on their own the parts they are working with and whether they will get the desired results or not.
i have put enough faith that this is the next best alternative that i perform it on all rebuilds from here on out.
BUT
i will be taking this a step further and will be talking to local electroplating shops and hard coatings this week to actually get a 100% perfect surface, but that will require more testing and more time. i won't pull a JHB and let the customers be the guinea pigs for a method that may or may not work. here we are reworking the original surface, just thinning it out and i strongly recommend premixing fuel so that you get the most life from the housings as possible.
i won't know exact prices on completely refurbishing the housings until i get pricing quotes from some shops, even then that is an aim more towards the future when the non renesis housings are discontinued, keeping in mind the 12A housings can be replaced with 13B housings that have been narrowed in the meantime(win win, because the chrome is still good in the center of even severely worn 13B tubs).
we've all seen the examples threads of people flooding their newly rebuilt engines, needing fuel cut switches and pull starts. makes me scratch my head how bad those housings were to get new seals wasted on them. the housings i pictured last, the car started with a tap of the key after priming and again after only 10-15 mins of runtime and idled down well with minimal break in, with over 100k on the housings, basically what you would expect from brand new OEM housings.
granted that is not evidence that the chrome will not flake prematurely, my thought against that is the engines i have all torn down in the past using premix versus the stock OMP system which all showed drastically less wear and was not localized to certain areas unlike the OMP fitted engines. which leave a groove in the center and tend to have chatter lines if the engines see higher consistent revs.
while i know it will take a while to convince anyone of it, i will give ongoing results of the engines built with the resurfacing including my girlfriend's GXL which i'm going to rebuild with some of the crappiest housings i can dig up.
i have put enough faith that this is the next best alternative that i perform it on all rebuilds from here on out.
BUT
i will be taking this a step further and will be talking to local electroplating shops and hard coatings this week to actually get a 100% perfect surface, but that will require more testing and more time. i won't pull a JHB and let the customers be the guinea pigs for a method that may or may not work. here we are reworking the original surface, just thinning it out and i strongly recommend premixing fuel so that you get the most life from the housings as possible.
i won't know exact prices on completely refurbishing the housings until i get pricing quotes from some shops, even then that is an aim more towards the future when the non renesis housings are discontinued, keeping in mind the 12A housings can be replaced with 13B housings that have been narrowed in the meantime(win win, because the chrome is still good in the center of even severely worn 13B tubs).
we've all seen the examples threads of people flooding their newly rebuilt engines, needing fuel cut switches and pull starts. makes me scratch my head how bad those housings were to get new seals wasted on them. the housings i pictured last, the car started with a tap of the key after priming and again after only 10-15 mins of runtime and idled down well with minimal break in, with over 100k on the housings, basically what you would expect from brand new OEM housings.
granted that is not evidence that the chrome will not flake prematurely, my thought against that is the engines i have all torn down in the past using premix versus the stock OMP system which all showed drastically less wear and was not localized to certain areas unlike the OMP fitted engines. which leave a groove in the center and tend to have chatter lines if the engines see higher consistent revs.
while i know it will take a while to convince anyone of it, i will give ongoing results of the engines built with the resurfacing including my girlfriend's GXL which i'm going to rebuild with some of the crappiest housings i can dig up.
Last edited by RotaryEvolution; 09-25-11 at 06:13 PM.
09-25-11, 07:44 PM
#20
it takes years to get conclusive evidence, for now it is just for people to evaluate on their own the parts they are working with and whether they will get the desired results or not.
i have put enough faith that this is the next best alternative that i perform it on all rebuilds from here on out.
BUT
i will be taking this a step further and will be talking to local electroplating shops and hard coatings this week to actually get a 100% perfect surface, but that will require more testing and more time. i won't pull a JHB and let the customers be the guinea pigs for a method that may or may not work. here we are reworking the original surface, just thinning it out and i strongly recommend premixing fuel so that you get the most life from the housings as possible.
i won't know exact prices on completely refurbishing the housings until i get pricing quotes from some shops, even then that is an aim more towards the future when the non renesis housings are discontinued, keeping in mind the 12A housings can be replaced with 13B housings that have been narrowed in the meantime(win win, because the chrome is still good in the center of even severely worn 13B tubs).
we've all seen the examples threads of people flooding their newly rebuilt engines, needing fuel cut switches and pull starts. makes me scratch my head how bad those housings were to get new seals wasted on them. the housings i pictured last, the car started with a tap of the key after priming and again after only 10-15 mins of runtime and idled down well with minimal break in, with over 100k on the housings, basically what you would expect from brand new OEM housings.
granted that is not evidence that the chrome will not flake prematurely, my thought against that is the engines i have all torn down in the past using premix versus the stock OMP system which all showed drastically less wear and was not localized to certain areas unlike the OMP fitted engines. which leave a groove in the center and tend to have chatter lines if the engines see higher consistent revs.
while i know it will take a while to convince anyone of it, i will give ongoing results of the engines built with the resurfacing including my girlfriend's GXL which i'm going to rebuild with some of the crappiest housings i can dig up.
i have put enough faith that this is the next best alternative that i perform it on all rebuilds from here on out.
BUT
i will be taking this a step further and will be talking to local electroplating shops and hard coatings this week to actually get a 100% perfect surface, but that will require more testing and more time. i won't pull a JHB and let the customers be the guinea pigs for a method that may or may not work. here we are reworking the original surface, just thinning it out and i strongly recommend premixing fuel so that you get the most life from the housings as possible.
i won't know exact prices on completely refurbishing the housings until i get pricing quotes from some shops, even then that is an aim more towards the future when the non renesis housings are discontinued, keeping in mind the 12A housings can be replaced with 13B housings that have been narrowed in the meantime(win win, because the chrome is still good in the center of even severely worn 13B tubs).
we've all seen the examples threads of people flooding their newly rebuilt engines, needing fuel cut switches and pull starts. makes me scratch my head how bad those housings were to get new seals wasted on them. the housings i pictured last, the car started with a tap of the key after priming and again after only 10-15 mins of runtime and idled down well with minimal break in, with over 100k on the housings, basically what you would expect from brand new OEM housings.
granted that is not evidence that the chrome will not flake prematurely, my thought against that is the engines i have all torn down in the past using premix versus the stock OMP system which all showed drastically less wear and was not localized to certain areas unlike the OMP fitted engines. which leave a groove in the center and tend to have chatter lines if the engines see higher consistent revs.
while i know it will take a while to convince anyone of it, i will give ongoing results of the engines built with the resurfacing including my girlfriend's GXL which i'm going to rebuild with some of the crappiest housings i can dig up.
The electroplating seems as though it's really the way to go- cool thing is the chrome would only cling to the steel. I'd imagine the housing width would have to be re-machined afterward, from plating accumulating on the steel insert on the sides.
This all being said, I feel I'd definitely be interested down the road.
02-02-12, 01:57 PM
#23
a single housing i did the full treatment on(bead blasting, cleaned thoroughly, reamed holes with a wire brush, retapped all the threads and resurfaced) to sell to a customer.
again, since people keep asking, price is $125 per housing plus return shipping.
again, since people keep asking, price is $125 per housing plus return shipping.
Last edited by RotaryEvolution; 02-02-12 at 02:07 PM.
