Harry's Renny Engine Shenanigans

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HarSc
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Harry's Renny Engine Shenanigans

Post by HarSc »

Following on from my disassembly of a few engines here & here, I thought I might aswell make an actual thread for all my engine disassembly-ness, and hey - maybe in future i'll make one for when I decide to do the reverse and actually assemble one for a change :lol:

I know i've got a few that i'll be stripping in the near future, so thought I might as well start making a log/thread of the condition and failures of said engines and plonk them all here!

Currently got one on the engine stand now after wrestling to get it out of the Mazda 2, got to try out my new flywheel locking tool, works lovely in comparison to my old "lob a bit of unistrut across it and sacrifice a few bolts that can get bent" method I had used prior... :paranoid: :lol: Got the flywheel nut off in an instant with my new Milwaukee impact to beef up my baby 1/2 impact I already had (New toys are always good! :inlove:) but the front bolt is proving very stubborn - this engine hasn't been apart before. Will leave it that side up and soak it in plusgas, charge up the batteries to 100% full and see where that gets me! :p

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Re: Harry's Renny Engine Shenanigans

Post by Cscameron »

Drip tray!!!!!

Let's not destroy another patch of your mums driveway 😂
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Drip tray is definitely needed now hah! It's not destruction, just merely a semi-permanent tint on some of the paving..... From oil 8-[ 8-[ 8-[ whoooooops! :lol:
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Milos_Balunovic (Mon Oct 03, 2022 8:33 am)
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Re: Harry's Renny Engine Shenanigans

Post by ChrisHolmes »

PlusGas won’t do anything as it’s not rust but probably a film of sealant on the back of the nut which creates a large joint area to break free. I have bounced on a 3/4 drive bar with a 4ft scaffold pole before to break the nut free. Fingers crossed for your Milwaukee
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Ahhhh, ok - good point on that front. Will see how the impact does when I give it a go another time, and worst comes to worst i'll have to put all my might on a breaker bar and see if that works like it did for you! :p :D
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Re: Harry's Renny Engine Shenanigans

Post by 350matt »

Use a heat gun to heat the nut up
then have a go
the increased temp will soften the sealent and expand the joint, both reducing the clamp load
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ChrisHolmes (Sun Oct 02, 2022 8:39 pm) • HarSc (Sun Oct 02, 2022 8:48 pm)
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Re: Harry's Renny Engine Shenanigans

Post by Cscameron »

That sounds like an excuse to use a blow torch.....

You want me to come visit again 😈
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Re: Harry's Renny Engine Shenanigans

Post by ChrisHolmes »

If you do use a long bar then jam a wheel of the engine stand under a bench or something as it will tip with the force required.
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HarSc (Sun Oct 02, 2022 8:48 pm)
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Sep 2005-Aug 2006 EO55 XOL VR 231 New
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Shall try that. Always used to wonder why they sit there roasting the ever loving marshmallows out of some poor bolt in videos online - makes sense now I guess if they're all this tight :rofl: shall dig the heat gun out too, can't hurt to try it :D cheers peeps!


Right-o Chris! I shall be sure to sufficiently chock them so I don't have a renesis landing on my toes! :^o :lol:
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Cscameron wrote:
Sun Oct 02, 2022 8:34 pm
That sounds like an excuse to use a blow torch.....

You want me to come visit again 😈
I mean, if you wanna set fire to some stuff and play with fire, feel free :lol: :lol: :lol:
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Cscameron (Sun Oct 02, 2022 8:49 pm)
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Harry's Renny Engine Shenanigans

Post by GreySilver Beast »

Harry got toys to play with :rofl:
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Milos_Balunovic (Mon Oct 03, 2022 8:34 am)
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Re: Harry's Renny Engine Shenanigans

Post by Milos_Balunovic »

ChrisHolmes wrote:
Sun Oct 02, 2022 8:19 pm
PlusGas won’t do anything as it’s not rust but probably a film of sealant on the back of the nut which creates a large joint area to break free. I have bounced on a 3/4 drive bar with a 4ft scaffold pole before to break the nut free. Fingers crossed for your Milwaukee
impact will struggle as the sealing compound gives the elasticity needed to stop the impact delivering the sufficient torque. long bar is the only way to do it (without damaging anything) as a strong enough impact could probably damage the bolt.
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Re: Harry's Renny Engine Shenanigans

Post by Lemon »

HarSc wrote:
Sun Oct 02, 2022 7:38 pm
Following on from my disassembly of a few engines here & here, I thought I might aswell make an actual thread for all my engine disassembly-ness, and hey - maybe in future i'll make one for when I decide to do the reverse and actually assemble one for a change :lol:

I know i've got a few that i'll be stripping in the near future, so thought I might as well start making a log/thread of the condition and failures of said engines and plonk them all here!

Currently got one on the engine stand now after wrestling to get it out of the Mazda 2, got to try out my new flywheel locking tool, works lovely in comparison to my old "lob a bit of unistrut across it and sacrifice a few bolts that can get bent" method I had used prior... :paranoid: :lol: Got the flywheel nut off in an instant with my new Milwaukee impact to beef up my baby 1/2 impact I already had (New toys are always good! :inlove:) but the front bolt is proving very stubborn - this engine hasn't been apart before. Will leave it that side up and soak it in plusgas, charge up the batteries to 100% full and see where that gets me! :p


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either you have tiny hands or that gun is mahousive
Thanks, Stu

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Re: Harry's Renny Engine Shenanigans

Post by 350matt »

Cscameron wrote:
Sun Oct 02, 2022 8:34 pm
That sounds like an excuse to use a blow torch.....

You want me to come visit again 😈
Do not get the nut cherry red as this will render it scrap, due to softening it plus there's a chance of damaging the thermal pellet that lives behind it ( of course you may be planning to delate that feature anyway)
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

So! Back at it today - managed to get the front nut undone, using my beefiest 1/2 inch bar and a length of unistrut round it. I mean, it's not exactly scaffold bar but it's close! :lol: got a 3/4 big bar on the way as it was looking a bit flexible with all the oomph on it, and if I'm doing more engines, probably best to get a beefier bar & socket.

This one is the 231 S1 engine removed from Phil's Kuro preservation project here, which had apex seal failure on the rear rotor. Turns out his keen eye spotting that there was literally no seal left there was entirely correct - it had shattered and happily bounced its way around the housing, shards everywhere and royally trashed the place :lol: :lol: rear iron, centre iron, a housing and rotor entirely toast. front rotor was ok, housing doesn't look in the best condition in terms of scoring and slight chatter, plus the chrome chipping at the edge just above the spark plugs. Photo dump below :P

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Last edited by HarSc on Sat Oct 15, 2022 3:30 pm, edited 1 time in total.
Reason: Got my front and rears the wrong way round!
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Re: Harry's Renny Engine Shenanigans

Post by rotatopotato »

Ooh yeah it really done a number on that motor 🙈

Look how they massacred my boy...
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Ok, wrong way round. :lol: was thinking back to front - rear rotor had the damage, front was ok. Sends my brain funny cos you disassemble rear to front #-o :lol:
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Re: Harry's Renny Engine Shenanigans

Post by ChrisHolmes »

Oh dear, that’s just a set of doorstops or clocks unfortunately.
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Milos_Balunovic (Sun Oct 16, 2022 9:37 am)
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Sep 2005-Aug 2006 EO55 XOL VR 231 New
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Re: Harry's Renny Engine Shenanigans

Post by rotatopotato »

Oh oh make me an ornament Harry! 😁
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Oh hey! I forgot I made this thread :^o #-o

Well, I've done a few engine teardowns since the last one from Phil's Kuro, but that'll take some digging to go back through and find :lol:

BUT! Today I bought and stripped a 44k mile 192 block that was removed, running rough and had to limp it home, owner ended up 231 swapping the car and this just sat in his garage for a while. New SGS stand and engine as an almost bare block for £40 and £80 respectively from the fella, so thought it was worth a punt. Also gets me a second engine stand "for reasons". Don't need two - but more the merrier :rofl: bought another rotary engine stand adapter to pair with it - awesome little things! They're a must as it's so much nicer using these plates than the stock bolt pass-through things the piston engines/gearboxes use? :-k


Anyways - on to the engine...

Getting better at whizzing these front bolts off, wedge it against the wall with my 3/4 breaker bar on it with a 3m length of unistrut, and a helper to push the engine stand into the wall so it doesn't fall over :lol: impact still doesn't touch em, either on rebuilt ones or stock ones, the sealant just takes the bite out of the hammer and doesn't break the seal :|

Cracked the rear iron off, to see all manner of utter carnage and destruction :shock: :shock: :shock: :shock:

What a mess!

Two apex seals decided to exit stage left, with the third still hanging on in there but cracked in all number of places, all side/corner seals still intact but not like that's a redeeming factor at this point :lol: inner coolant seal had a split at the top of the housing on the rear face, and then just irons/rotor/housing are all toast. Complete scrap.

Luckily, the same is not to be said of the front rotor. Nice and clean, lovely stuff. All seals intact, no visible wear or issues with the rotor or housing, minimal edge wear and the most minor of chatter, but no chips, grooves or anything of the sort! =D> seems like it's my 3rd good housing I've got :lol: only shame is there's a deep circular groove on the front iron, which I can only assume is from an oil control ring? :-k you can really catch your nail on it - I assume it can't really be flattened and re-done? :scratch: (see second to last pic)

Either way - I've got a rotor, housing and an e-shaft out of the ordeal, plus the nice shiny SGS engine stand so I'm a happy boy =D>



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ChrisHolmes (Sat Jan 13, 2024 11:28 pm)
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Re: Harry's Renny Engine Shenanigans

Post by ChrisHolmes »

With your level of ingenuity and skills Harry you will be unstoppable in your rotary adventures in the future.
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Picked up my next victim engine for pulling apart :twisted: now it's always good to be safe, PPE is essential of course.... :lol: :lol:


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ChrisHolmes (Thu Feb 01, 2024 9:01 am)
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Engine disassembled! While this one had no broken seals, it was a running engine before the car was scrapped and it removed. I guess they didn't know about the terrific bearing damage they had :shock: was not expecting the disco ball in the sump and the oil pickup when I puilled it off :lol:

Front stationary gear bearing is the culprit, all others looked pretty fine! Gouges on the spacer, e-shaft near both ends and a few grazes on the tips of the front rotor, rear rotor seemed to get away with it a bit more. Although the housings and irons don't really show signs of it wearing on the edges where you'd expect the rotor to hit... I guess you can only know when you properly measure the faces/step wear. Can't seem to catch my fingernail on any of it, but that's not completely foolproof :P still! Rear housing looks better than the front, hopefully both useable, and irons not too bad as far as I can see.

Definitely not what I was expecting out of this engine when I saw the sprinkles of copper all over :lol:

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Re: Harry's Renny Engine Shenanigans

Post by ChrisHolmes »

A bit of an oil supply issue to those stationary bearings. Its lucky the rotor bearings haven't got maramalised too, it must have locked up pretty quickly.
The housings and rotors could well be salvageable, time for your measuring stick to come out.
You may even get away with the irons if you are lucky
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HarSc (Mon Apr 15, 2024 8:29 pm)
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Sep 2005-Aug 2006 EO55 XOL VR 231 New
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Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black
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Re: Harry's Renny Engine Shenanigans

Post by HarSc »

Next up on the chopping block! Managed to snag myself a used, running but unknown compression R3 engine for £250 complete :twisted: and who am I to say no, it's worth a punt on it!

Stripped down, cracked open, and woooo! Plenty of good looking bits :yeah: :inlove:

Rear housing is the better of the two, front housing having some very faint vertical score marks that I can't feel with my nail, but notice with my fingertip. No chrome flake on either, so hopefully a hone/resurface can do the world of good to this pair and be used again! :twisted:

Irons all look good to my eye, admittedly not measured them but shall keep around in my spares either way. Can't have too many R3 bits if you never want to sell the car :P

e-shaft and rotors are all fine too, so a good engine to have split open! =D> definitely be able to get the white R3 sorted if it were to go pop now :lol:


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