12A S3 Engine Re Build

Rotary Engine Chat......Got A Problem With Your Rotary Engine.... Need Help...?
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A7RXY
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Joined: Fri Apr 01, 2011 6:55 am
Location: Upminster, Essex UK

Re: 12A S3 Engine Re Build

Post by A7RXY » Thu Feb 23, 2017 7:05 pm

DKWW2000 wrote:
A7RXY wrote:Pete that looks fantastic, you can do one for me next ...... Only joking
At the moment it is like a lot of Cars & MCs that get taken to shows - there are No working parts inside :o

........ So only the easy bits to do then .......

Lucky
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Joined: Mon Nov 07, 2011 8:30 pm
Location: Worthing, UK

Re: 12A S3 Engine Re Build

Post by Lucky » Thu Feb 23, 2017 10:52 pm

I wonder what happened to make the insert bulge like that. Looks like frost damage... except there aren't any waterways there are there? :?

Looks excellent now though, Pete

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Hobbawobba
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Location: Worcester - UK

Re: 12A S3 Engine Re Build

Post by Hobbawobba » Thu Feb 23, 2017 11:05 pm

Awesome work Pete! That looks really nice

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DKWW2000
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Location: English Riviera - South Devon

Re: 12A S3 Engine Re Build

Post by DKWW2000 » Thu Mar 16, 2017 7:27 pm

Engine build now nearly complete, just got to tighten E Shaft Nut/Bolt then check End Play'.
New Apex seals went in alright & only got 3 O rings left? Doh!

A word of warning if any one else is thinking of doing the same, when purchasing a couple pots of Vaseline for the build, do not do it in the presence of someone else as "It's for a Engine re-build" does not serve as a valid reason & all sorts of explanations does not work :o

A few pictures so far:-
New Seals
Image

Image

Image

It was good to hear the loud Squishing sound as it was turned :P :P

Image

A few bits left :oops: :oops: over

Image
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

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ian65
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Joined: Wed Mar 30, 2011 12:11 am

Re: 12A S3 Engine Re Build

Post by ian65 » Fri Mar 17, 2017 10:32 pm

good stuff Pete... did you rebuild it as stock or do any porting? Is this going into your car or are you just doing it as a spare?

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DKWW2000
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Joined: Sun Jul 06, 2014 10:16 pm
Location: English Riviera - South Devon

Re: 12A S3 Engine Re Build

Post by DKWW2000 » Sat Mar 18, 2017 9:14 am

It has been rebuilt stock, no porting. I have done it as a spare, my engine (touch wood) is still spot on & just done 60K. I did it for the experience whilst the parts are still available, the End Float is now done & is well within tolerance. I took my time & enjoyed doing it, now used up all the 'O' rings.
I think the important part is laying out all the parts first so you do not miss a any, having a good DVD/You Tube/Haynes as they all differ slightly & are mainly for 13B.

I think in the future if & when the engine is needed it will go into a Stock 7 as any need for more power will be satisfied by a 13B. Who knows if the FC vert does not materialise (owner still reluctant to part with it) I may find a needy FB to restore :lol:

I would love a RX4.
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

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ian65
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Joined: Wed Mar 30, 2011 12:11 am

Re: 12A S3 Engine Re Build

Post by ian65 » Sat Mar 18, 2017 10:18 am

It's always handy to have a spare engine under the bench, especially if you know its a good one.

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Hobbawobba
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Location: Worcester - UK

Re: 12A S3 Engine Re Build

Post by Hobbawobba » Sun Mar 19, 2017 3:06 pm

Sweet! Looks good aye. It's making me want a new engine :? hahah

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ian65
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Re: 12A S3 Engine Re Build

Post by ian65 » Sun Mar 19, 2017 5:37 pm

which soft seal and gasket kit did you use?

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DKWW2000
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Location: English Riviera - South Devon

Re: 12A S3 Engine Re Build

Post by DKWW2000 » Sun Mar 19, 2017 7:04 pm

ian65 wrote:which soft seal and gasket kit did you use?
I used Rock Auto,
FEL-PRO FS93851 {#N23199100} FULL SETS.

No problems so far, comes with the gaskets as well (Water Pump, Inlet, Exhaust, Sump, OMP etc etc) & Oil Pickup/Filter/Distributor 'O' rings etc.

I bought it last year before the £ went Tits Up, it was $161.
RX7 FB S3 - RX7 FC TII Vert
Rotaries Previously Owned:-
2 x NSU Ro 80s - 2 x S2 RX7s - Suzuki RE 5 - DKW(Hercules) W2000 - Norton (Krauser) Commander

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