HI, I'm pretty new to the reader's list, and thought that this subject was
pretty interesting. I've had my '77 1500 since 1981, and never had a
problem with blowing oil until I rebuilt the engine last year. I used high
compression pistons, Kent cam, Weber 32/36 carb and a Mallory Unilite
distributor. It runs great except for too high an idle speed and oil that
blows out of the dipstick and valve cover vent. The oil will pool up in the
air cleaner assembly after a short period of time. It doesn't get into the
carb as the Weber's inlet has a raised area that blocks it. I assumed that
I had excessive blowby that will go away after the rings seat, but after 700
miles, it hasn't. I do have an electric fuel pump that I added as a boost
pump for the mechanical pump, so I could use the mechanical pump's mounting
pad as described in Joe's article. As Bob asked, what else could/should be
done? I'm also unclear on how the emissions equipment (when it was
installed) kept the oil from blowing - the pressure has to vent somewhere.
Please explain.
Thanks!
Michael Altomare
'77 Spitfire 1500
MTAltomare@Prodigy.net
-----Original Message-----
From: Bob Norway <examiner@scci.net>
To: Joe Curry <spitlist@gte.net>
Cc: Spitfire List <spitfires@autox.team.net>
Date: Sunday, February 07, 1999 11:14 PM
Subject: Re: 1500 Blowing Oil
>Joe,
>Thanks for the info and sorry I mis-credited the article. Anyway, I've
>decided to go for the electric pump (don't want to pull the crank). What
else
>will I need, if anything, to insure good breathing? The only other venting
>currently installed is a hose from the top of the valve cover that T's to
>the carb and charcoal evap can. Any and all advice greatly appreciated.
>
>Cheers
>
>Joe Curry wrote:
>
>> Bob,
>> Actually, that was my article. But if you don't want to install an
>> electric fuel pump, you can accomplish the same thing by drilling out
>> the closed port on the right hand side of the engine and installing a
>> vent there. That protruding bump on the block is where Triumph closed
>> up the casting where used to be a blow-by pipe on early engine blocks.
>>
>> However, drilling this out is a tricky proposition and will deposit much
>> metal shavings into the sump. Therefore it should be done with the oil
>> pan off and something protecting the crankshaft from the shavings.
>> Ideally, you should remove the crankshaft, but that would mean removing
>> the engine. Now you know why the Electric fuel pump is such a good
>> idea.
>>
>> Regards,
>> Joe
>>
>> Bob Norway wrote:
>> >
>> > Read an article by Tom Shirley about correcting blowing oil as a result
>> > of removing air injection system, but it only addressed an engine with
>> > an electric fuel pump.
>> >
>> > ref:
>> > http://www.geocities.com/MotorCity/Speedway/1080/stopoilblowing.html
>> >
>> > Anybody got any ideas on what to do with a Spit with a regular
>> > mechanical fuel pump? How would one get the system to 'breath' and not
>> > blow oil?
>> >
>> > TIA
>> >
>> > Cheers
>> >
>> > --
>> > Bob Norway
>> > Rockledge, Florida
>> > Home Page http://www.geocities.com/CapitolHill/Lobby/5953/mypage.html
>> > ICQ# 3752712
>> > ***************************
>> > TLCB - Thailand, Laos, Cambodia Brotherhood
>> > http://www.seacoast.com/~jsweet/brotherh/index.html
>> > Udorn RTAFB Nov'70 - Nov'71
>> > 432 AMS/Autopilot
>> > ***************************
>> > Member Udorn VFW Post 10249
>> > Sawadee Home Page http://www.khonkaen.com/vfw/index.htm
>> > ***************************
>> > SpitList
>> > 1976 Triumph Spitfire 1500
>> > FM43376UO - Daily Driver
>> > ***************************
>> > "Don't Take My Pint Mate,
>> > I'm In The Loo!"
>>
>> --
>> "If you can't excel with talent, triumph with effort."
>> -- Dave Weinbaum in National Enquirer
>
>--
>Bob Norway
>Rockledge, Florida
>Home Page http://www.geocities.com/CapitolHill/Lobby/5953/mypage.html
>ICQ# 3752712
>***************************
>TLCB - Thailand, Laos, Cambodia Brotherhood
>http://www.seacoast.com/~jsweet/brotherh/index.html
>Udorn RTAFB Nov'70 - Nov'71
>432 AMS/Autopilot
>***************************
>Member Udorn VFW Post 10249
>Sawadee Home Page http://www.khonkaen.com/vfw/index.htm
>***************************
>SpitList
>1976 Triumph Spitfire 1500
>FM43376UO - Daily Driver
>***************************
>"Don't Take My Pint Mate,
>I'm In The Loo!"
>
>
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