Engine Rebuild - Tales of Caution and Woe

356 Porsche-related discussions and questions.
Message
Author
User avatar
David Jones
356 Fan
Posts: 3464
Joined: Tue Mar 25, 2008 6:32 pm
Tag: I wish I knew as much as I think I know.
Location: Harrodsburg, Kentucky

Re: Engine Rebuild - Tales of Caution and Woe

#31 Post by David Jones » Tue Nov 06, 2018 11:16 am

I must be very lucky as I did two major repairs on my first 356 in 1970 without much in the way of special tools and very little in the way of facilities. I pulled the engine at about 5 pm one evening at the base motor club and installed a set of aftermarket piston rings that I bought believing the engine was probably stock. I was lucky that it was. I reused all the old seals and gaskets on re-assembly and drove the car home at midnight. I did have help from a friend with the heavy lifting and to bring me a snack or two.
Next job was to replace the cracked diff carrier and that took more time but again I got lucky. I took the diff carrier out of my scrapped 58 VW and after taking some imprecise measurements and liberal use of prussian blue I re-assembled it and it worked as well as before it broke. It may still be out there still working "BMM935A" where are you?
All it takes is lack of money and the necessity for daily transport.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715

User avatar
John Brooks
356 Fan
Posts: 747
Joined: Tue Jul 08, 2008 11:50 am
Location: Whidbey Island WA.
Contact:

Re: Engine Rebuild - Tales of Caution and Woe

#32 Post by John Brooks » Tue Nov 06, 2018 1:00 pm

AL.
All the measuring stuff is over with the lathe and mill in another box. The photo is just the 356 engine assembly box and P-tool stuff. The scales, and head volume tools are in another case. I don't do engines all that much anymore.
Attachments
image.jpeg
356 run in stand
image.jpeg
356 engine box
John Brooks

62 Roadster
66 912
getting pushed around in porsches since 1965

User avatar
Adam Wright
356 Fan
Posts: 8325
Joined: Wed Mar 12, 2008 1:00 am
Tag: KTF

Re: Engine Rebuild - Tales of Caution and Woe

#33 Post by Adam Wright » Tue Nov 06, 2018 1:01 pm

John Brooks wrote:AL.
All the measuring stuff is over with the lathe and mill in another box. The photo is just the 356 engine assembly box and P-tool stuff. The scales, and head volume tools are in another case. I don't do engines all that much anymore.
Wow and you have a Ted too!
I always need stories for my Barn Find column in the magazine, if you have a good story to share, please let me know.

User avatar
Ron LaDow
356 Fan
Posts: 6257
Joined: Wed Mar 26, 2008 11:45 am
Location: San Francisco

Re: Engine Rebuild - Tales of Caution and Woe

#34 Post by Ron LaDow » Tue Nov 06, 2018 1:33 pm

David Jones wrote:I must be very lucky as I did two major repairs on my first 356 in 1970 without much in the way of special tools and very little in the way of facilities.[...]All it takes is lack of money and the necessity for daily transport.
Probably most of us fiddling with them at that time had a similar experience, but the engine that got my attention in the Speedster was less than 15 years old at the time, and hadn't been the recipient of whatever was in the pile over there.
By now, we are all pretty much dealing with engines built of this and that, and with a huge number of cycles on some expensive parts, so someone coming in without experience is facing a lot of unknowns.
Ron LaDow
www.precisionmatters.biz

User avatar
Wes Bender
356 Fan
Posts: 2300
Joined: Wed Aug 27, 2008 10:54 am
Location: Alpine AZ, Green Valley AZ

Re: Engine Rebuild - Tales of Caution and Woe

#35 Post by Wes Bender » Tue Nov 06, 2018 2:21 pm

I'm somewhat better off now, but the first time I rebuilt a 356 engine, I had a milk crate for an engine stand. It was either that or take it to Valley Core. Where was Harry and his books (or videos) when I needed him?
Some days it just isn’t worth the hassle of chewing through the restraints......

User avatar
PaulLima
356 Fan
Posts: 199
Joined: Fri Jan 10, 2014 2:02 pm
Location: Carson City, NV

Re: Engine Rebuild - Tales of Caution and Woe

#36 Post by PaulLima » Tue Nov 06, 2018 3:58 pm

Since it is pretty much impossible to imagine building and engine with all-new parts, there should be a serious amount of measuring going on in the build process. E.g. torque case (clean & empty) and measure main bearing saddles. Measure all crank journals. Install main bearings with plastigauge, install crank, torque case, disassemble and confirm bearing clearances, refreshing the heads and taking account of the dimension changes that causes, etc. etc, etc. The actual assembly when all parts are confirmed in-spec isn't all that tough.

SPIKE JONES
356 Fan
Posts: 86
Joined: Tue Apr 08, 2008 2:19 pm
Location: Texas South Plains

Re: Engine Rebuild - Tales of Caution and Woe

#37 Post by SPIKE JONES » Tue Nov 06, 2018 4:48 pm

After reading all these posts, I fully know how fortunate I was to have my friend Mike Horton volunteer to assist (or was I the assistant?) in rebuilding my engine when it needed a new crankshaft. Mike has a great deal of experience with air cooled engines ( father's aircraft repair shop)
including 356 engines. He has forgotten more than I will ever know! It was a great experience for me and yes, driving the car means even more to me now. In fact, as soon as I post this, my wife and I are going out for a drive!
Spike Jones

User avatar
C J Murray
356 Fan
Posts: 7296
Joined: Fri Oct 23, 2009 7:24 pm
Location: 30MI WEST OF PHILA

Re: Engine Rebuild - Tales of Caution and Woe

#38 Post by C J Murray » Tue Nov 06, 2018 5:24 pm

Spike, you are lucky to have Mike "help". Enjoy the drive.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car - Finally Finished!
'63 GS 2133 coupe
'64 Elva Courier mk4T
'67 911 S Original Owner

User avatar
neilbardsley
356 Fan
Posts: 747
Joined: Tue Mar 20, 2012 10:21 am
Location: London

Re: Engine Rebuild - Tales of Caution and Woe

#39 Post by neilbardsley » Wed Nov 07, 2018 5:06 am

SPIKE JONES wrote:After reading all these posts, I fully know how fortunate I was to have my friend Mike Horton volunteer to assist (or was I the assistant?) in rebuilding my engine when it needed a new crankshaft. Mike has a great deal of experience with air cooled engines ( father's aircraft repair shop)
including 356 engines. He has forgotten more than I will ever know! It was a great experience for me and yes, driving the car means even more to me now. In fact, as soon as I post this, my wife and I are going out for a drive!
Congrats. There must be something very special about driving a car with an engine you built in the back!

User avatar
Hugo Sheers
356 Fan
Posts: 38
Joined: Fri Jun 25, 2010 11:10 am
Location: Reading, United Kingdom

Re: Engine Rebuild - Tales of Caution and Woe

#40 Post by Hugo Sheers » Wed Nov 14, 2018 4:22 am

David, I'm afraid BMM935A may have made the ultimate sacrifice so that other 356s may live, at least the registration is not currently taxed and there is no MOT history. You can check UK tax & MOT status here (note cars this old no longer require an MOT):

https://vehicleenquiry.service.gov.uk/ViewVehicle

https://www.check-mot.service.gov.uk/

I suppose it's possible the car was re-registered under a different number at some point in its life...
Cheers
Hugo

Post Reply