Engine Rebuild Time?
12-19-2013, 07:12 PM
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Engine Rebuild Time?
Hey guys quick question.
If I took my 8 to a shop that specialized in rotary rebuilds, how long would it take them to have the car back in my possession?
(I have not taken my car to the shop, and this is off a no complications basis)
If I took my 8 to a shop that specialized in rotary rebuilds, how long would it take them to have the car back in my possession?
(I have not taken my car to the shop, and this is off a no complications basis)
12-19-2013, 07:53 PM
#2
Driving my unreliable rx8
It only takes 1-2 Days worth of work to pull an engine rebuild it and reinstall it. It could probably be done in a day with someone who knows what they are doing and has all the parts on hand.
The rest of the time is waiting on parts and how they prioritize your job.
Probably 2-3 weeks If I had to guess without knowing the shop.
The rest of the time is waiting on parts and how they prioritize your job.
Probably 2-3 weeks If I had to guess without knowing the shop.
12-20-2013, 01:14 PM
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Newblet
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What shop are thinking of taking it to MrHH?
Agreed. To do a GOOD rebuild you're looking at a good bit more than 1-2 days from driving up to driving out. Especially if you're not the only customer..
My last build was done with a BRAND NEW engine (not a dirty old used one with 50k-100k miles). Clearancing and prepping the rotors took the better part of a Saturday. Stacking the engine was done on Sunday. And then you want to give your "Right Stuff" sealant/gasket maker (for the oil pan) time to cure before adding oil. Murphy always seems to involve himself in big mechanical tasks, causing things to come up and delays to occur...
If you have EVERYTHING already lined up regarding spare/replacement good rotors/housings/irons on site already, AND you're the top priority, then I'd say a one week is a stupidly quick turn around. Two weeks to a month is probably more realistic though, with more time added on if you need parts machined or otherwise sent out for modification.
Saying a rebuild (and everything associated with it) should only take 1-2 days sounds like a pipe dream to me (unless you're backed by a NO **** race team that has spare engines just laying around all waiting for a single car).
Performance work has 3 options: Quality, Fast, Cheap. Pick 2
My last build was done with a BRAND NEW engine (not a dirty old used one with 50k-100k miles). Clearancing and prepping the rotors took the better part of a Saturday. Stacking the engine was done on Sunday. And then you want to give your "Right Stuff" sealant/gasket maker (for the oil pan) time to cure before adding oil. Murphy always seems to involve himself in big mechanical tasks, causing things to come up and delays to occur...
If you have EVERYTHING already lined up regarding spare/replacement good rotors/housings/irons on site already, AND you're the top priority, then I'd say a one week is a stupidly quick turn around. Two weeks to a month is probably more realistic though, with more time added on if you need parts machined or otherwise sent out for modification.
Saying a rebuild (and everything associated with it) should only take 1-2 days sounds like a pipe dream to me (unless you're backed by a NO **** race team that has spare engines just laying around all waiting for a single car).
Performance work has 3 options: Quality, Fast, Cheap. Pick 2
12-20-2013, 05:23 PM
#5
Driving my unreliable rx8
Sorry if ya'll misinterpreted what i said but read it again. I said probably 2-3 weeks mostly waiting on parts and how they prioritize the job (in other words if you're not their only customer).
By days I meant 24-48 hours. I doubt if any shops are putting 48 man hours into an engine rebuild.
If they specialize in it I would hope they have all the parts for a rebuild on hand.
Fenda, Who spent the better part of a saturday doing your clearencing? Was is somebody who does it for a living?
By days I meant 24-48 hours. I doubt if any shops are putting 48 man hours into an engine rebuild.
If they specialize in it I would hope they have all the parts for a rebuild on hand.
Fenda, Who spent the better part of a saturday doing your clearencing? Was is somebody who does it for a living?
12-20-2013, 07:31 PM
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Yeah, I def read that as a 1-2 day time table for the whole project completion.
Even if the shop has spare hard parts on hand, there is a strong likelihood that the original parts will be reused anyway, unless they are damaged beyond repair. Most people aren't going to want to pay extra for somebody elses used parts to get thrown into their rebuild. If housings need resurfacing or irons need lapping/nitrating than that's going to take additional time and money.
My buddy Brian (who is an experienced engine builder, fabricator, and tuner) along with my other buddy Mike (who is a Mechanical Engineer currently employed by NASA) did the clearancing and rotor prep.
My rotors had recently returned from being lightened, balanced, and clearanced. The CNC lightening process tightened up the side seal slots. So, even though all internals were spotlessly cleaned (which takes a lot of time and effort unless done ultrasonically with a correct chemical bath) we still had our work cut out for us.
We also used the longer side seals (as opposed to the pre-cut option) in order to get exact side/corner clearances in addition to correct apex seal clearancing.
My engine prep work took additional time due to the additional labor required to get my rotors perfect. Everything else came from the last brand new REW sold by Mazda USA, ALL components (except for the rotors, which were from an S4 N/A rx-7) had 0 miles on them.
The average rebuild will take additional time to clean dirty internals (installing rotors caked in carbon is NOT acceptable) and correct wear to the hard engine components.
Saying that a rebuild process will take 24-48 labor hours is much more accurate (in my opinion) than stating it should only take 1-2 days.
Originally Posted by logalinipoo
If they specialize in it I would hope they have all the parts for a rebuild on hand.
Originally Posted by logalinipoo
Fenda, Who spent the better part of a saturday doing your clearencing? Was is somebody who does it for a living?
My rotors had recently returned from being lightened, balanced, and clearanced. The CNC lightening process tightened up the side seal slots. So, even though all internals were spotlessly cleaned (which takes a lot of time and effort unless done ultrasonically with a correct chemical bath) we still had our work cut out for us.
We also used the longer side seals (as opposed to the pre-cut option) in order to get exact side/corner clearances in addition to correct apex seal clearancing.
My engine prep work took additional time due to the additional labor required to get my rotors perfect. Everything else came from the last brand new REW sold by Mazda USA, ALL components (except for the rotors, which were from an S4 N/A rx-7) had 0 miles on them.
The average rebuild will take additional time to clean dirty internals (installing rotors caked in carbon is NOT acceptable) and correct wear to the hard engine components.
Saying that a rebuild process will take 24-48 labor hours is much more accurate (in my opinion) than stating it should only take 1-2 days.
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