My engine blow its dip stick off

356 Porsche-related discussions and questions.
Message
Author
User avatar
Wes Bender
356 Fan
Posts: 2296
Joined: Wed Aug 27, 2008 10:54 am
Location: Alpine AZ, Green Valley AZ

Re: My engine blow its dip stick off

#31 Post by Wes Bender » Thu Oct 18, 2018 1:36 pm

If the engine hangs the way most 356Cs are, you could probably drop a lug wrench down through the gap at the rear of the tin. At least mine is that way. I don't worry about it though. Don't know of any other likely exits without actually seeing the engine compartment. I think he should check in front of the fan shroud and see if the dipstick is down there.

It wouldn't take much effort to prove/disprove the pressurization theory. Rafik, what say you?
Some days it just isn’t worth the hassle of chewing through the restraints......

User avatar
Mervyn Hyde
356 Fan
Posts: 755
Joined: Wed Nov 25, 2015 9:12 pm
Location: Sunshine Coast Australia

Re: My engine blow its dip stick off

#32 Post by Mervyn Hyde » Thu Oct 18, 2018 5:24 pm

Put in another dipstick? Add a strand of wire long enough to make sure it doesn't pop right out and foul the pulley or belt, if it blows out. Put a loop in the wire and drive the car. See if the loop is straightened.
Merv
TYP356
1963 356B T6
1968 911 SWB

User avatar
Craig Richter
356 Fan
Posts: 869
Joined: Thu Dec 15, 2011 9:01 pm
Location: San Miguel de Allende/Traunkirchen

Re: My engine blow its dip stick off

#33 Post by Craig Richter » Thu Oct 18, 2018 7:28 pm

Wes, I think you've got it. I started to post something about the problems with using those restrictive little mini-filters, but the last topic about crankcase venting didn't go too well, so I forgot about it. My real thought that I didn't get a chance to share on that other topic was that Porsche thought things out pretty well back in the day, and deviating much, just because you can, rarely resulted in improvement.
 

Martin Benade
356 Fan
Posts: 3646
Joined: Wed Nov 23, 2011 10:52 am
Location: Cleveland, Ohio

Re: My engine blow its dip stick off

#34 Post by Martin Benade » Thu Oct 18, 2018 9:14 pm

Yes, I am often surprised at how stock I like my 356- not because I am a purist, but because of how right it was as built. Oil filtration is about the only thing I would criticize. The other factor may also be that I have never been this old before.

User avatar
Rafik Dous
356 Fan
Posts: 543
Joined: Tue Mar 25, 2008 8:12 pm

Re: My engine blow its dip stick off

#35 Post by Rafik Dous » Fri Oct 19, 2018 5:24 am

Took it for another long drive today, everything seem to behave, so I am going to put it to bed till something else happens
Pressure at 2,500 rpm and approx 90k/hr in the pics below
Attachments
IMG_3268.jpg
IMG_3269.jpg

Martin Benade
356 Fan
Posts: 3646
Joined: Wed Nov 23, 2011 10:52 am
Location: Cleveland, Ohio

Re: My engine blow its dip stick off

#36 Post by Martin Benade » Fri Oct 19, 2018 7:15 am

What is the squirt switch controlling?

User avatar
Craig Richter
356 Fan
Posts: 869
Joined: Thu Dec 15, 2011 9:01 pm
Location: San Miguel de Allende/Traunkirchen

Re: My engine blow its dip stick off

#37 Post by Craig Richter » Fri Oct 19, 2018 10:42 am

Wow, that is some hot rod you've got there, Rafik.
 

User avatar
Rafik Dous
356 Fan
Posts: 543
Joined: Tue Mar 25, 2008 8:12 pm

Re: My engine blow its dip stick off

#38 Post by Rafik Dous » Fri Oct 19, 2018 4:04 pm

That’s her
Attachments
IMG_2548.jpg

User avatar
Jim Liberty
356 Registry Member
Posts: 2537
Joined: Tue May 06, 2008 3:47 pm
Location: Orange Co., CA

Re: My engine blow its dip stick off

#39 Post by Jim Liberty » Fri Oct 19, 2018 4:59 pm

DSC_0019-001.JPG
OK, I have to comment. I've had to devise a hold down device for my 595 ABARTH dip stick. It does blow off without a spring hold down. ………..Jim

PS. It is an air cooled motor in the rear of the car.
Jim Liberty

User avatar
Craig Richter
356 Fan
Posts: 869
Joined: Thu Dec 15, 2011 9:01 pm
Location: San Miguel de Allende/Traunkirchen

Re: My engine blow its dip stick off

#40 Post by Craig Richter » Fri Oct 19, 2018 7:55 pm

All those Honda single-cylinder trail bikes I had, plus our B&S lawn mower, all had screw-in dip sticks. Must be a one-lunger thing.
 

M Penta
356 Fan
Posts: 688
Joined: Tue May 31, 2011 10:07 pm
Location: VT

Re: My engine blow its dip stick off

#41 Post by M Penta » Sun Oct 21, 2018 12:01 am

I agree that the filter on breather is the problem. I don,t see what advantages that set up provides.
Route the breather to air filter as designed. Slight vacuum on cc should solve your problem, and no your carb will not get oily and plugs will not foul if engine is in good shape. Venting to atmosphere through a long hose, or to a restrictive filter is not the way to go.

User avatar
C J Murray
356 Fan
Posts: 7294
Joined: Fri Oct 23, 2009 7:24 pm
Location: 30MI WEST OF PHILA

Re: My engine blow its dip stick off

#42 Post by C J Murray » Sun Oct 21, 2018 8:40 am

Single cylinder engines are problematic due to there being no offsetting action from other pistons. Same situation with twins that have pistons moving the same direction, not opposing directions.

Under no circumstances is it a good idea functionally to vent your crankcase to your carburetor. This method was forced on car manufacturers by Government or it would never been done. If your car was originally set up that way and you want it to be "correct", fine, but that is the only excuse to puke crankcase gasses into your combustion chamber.
'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

Dick Weiss
356 Fan
Posts: 3032
Joined: Sun Apr 20, 2008 12:54 am

Re: My engine blow its dip stick off

#43 Post by Dick Weiss » Sun Oct 21, 2018 10:29 am

The dipstick has a 2nd section when shaped properly keeps the stick in its tube; I've had some w/a good 'grip' to stay in place--needed a good pull to remove it, so It's hard to believe that case pressure could actually force it out! (MHO)
BTW, , there have been a couple of 'stick' tubes having a split/cracked end and its O-ring seal won't prevent a leak.

User avatar
Vic Skirmants
356 Registry Member
Posts: 6798
Joined: Tue Oct 27, 2009 5:02 pm
Location: SE Michigan

Re: My engine blow its dip stick off

#44 Post by Vic Skirmants » Sun Oct 21, 2018 11:17 am

I discovered this year, that a dipstick can leak between the two blades. Finally figured out why some of our race engines were oily, and some were dry in the engine compartment. Only took 55 years.

User avatar
John Clarke
356 Fan
Posts: 921
Joined: Wed Aug 27, 2008 6:38 am
Location: England
Contact:

Re: My engine blow its dip stick off

#45 Post by John Clarke » Wed Oct 24, 2018 9:36 am

Craig Richter wrote:Wes, I think you've got it. I started to post something about the problems with using those restrictive little mini-filters, but the last topic about crankcase venting didn't go too well, so I forgot about it. My real thought that I didn't get a chance to share on that other topic was that Porsche thought things out pretty well back in the day, and deviating much, just because you can, rarely resulted in improvement.
Hi Craig I did enquire what happened on that other post ref crankcase ventilation, but no replies.
Cheers Jay
 

Post Reply