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jhorton3

jhorton3

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Is anyone using a PCV valve setup other than the original configuration or Moss/Nissan replacement?
 
Right now I am using the stock 1275 setup (no PCV valve required) but previously I have run non-stock PCV setups on 948 & 1100 engines when the original valve stopped sucking properly (no comments please!!).
On those I just put in whatever PCV valve that the local auto parts store had that had 1/2" inlet and outlet and they all seemed to work just fine.
Bill
 
How did you realize you needed to start using a PCV valve? Where did it go?
 
I am using a PCV valve purchased at AutoZone. The part # is 1274. They have a good selection, but I don't have a brand name. It has a 3/8" barb fitting that goes to the manifold and the larger end is about 1/2" and goes to the timing chain cover collector. The modern 90 deg PCV is hardly noticeable compared to the original. I have posted a picture of the valve on my website: https://www.lowkeymusic.com/lkm_service_034.htm
 
Nice pics sqbsprite,

Are you new here?

Belong to any other BBS mailing lists that we might know you from?
 
Thanks for asking Trevor. Yes, I'm new to this board. I also post on Spritespot as lowkey1. I've had my '62 MKII Sprite for 22 years. I have a '73 MGB-GT also. I have restored two Gold level Sprites - a '63 MKII and a '60 BE for other people. I used to show mine, but now I just enjoy driving it. I dropped in the the 1275 about 3 years ago, but due to time constraints, I am just now getting it all sorted out. I was at Hershey in 1988 and plan to be there next year for the 50th. My daily driver is a '04 Mini Cooper S, but those aren't too popular in the vintage Mini circles.
 
From the pics looks like lovely work. Welcome.
 
Thanks sqbsprite. Why use a PCV valve? I did not think that these cars came with them...
 
Ahh, I thought I knew the sig line from somewhere. Welcome to the BCF. I'm a relative new comer to the spridget world (5 years or so). I hope to see you around the boards, we always need knowledgeable folks to guide us rookies. /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
 
I dropped by Autozone the other night and picked up one of their PCV valves. Big difference spending under $5 compared to the $60-80 for the original version. Especially if they do the exact same thing.

I need one to help calm down some of the oil leaks, especially out the rear main scroll seal. I tried a pipe from the timing cover can directly to the port on my intake. My carbs do not have the ports to plug in a Y connector. Worked for about 5 minutes then the oil vapor became intense and I had one of the best mosquito foggers in the neighborhood. When I plugged the pipe the smoking went away. That's when I realized I need a PCV valve.
 
asoupley said:
Thanks sqbsprite. Why use a PCV valve? I did not think that these cars came with them...
Click to expand...

The 948s and 1098s did not require them, but the 1275 will leak oil from the rear main if the crankcase does not have some negative pressure. I learned it the hard way. The ventilation must come from the front cover and draw air in thru the vent in the valve cover. There are various configurations, mine being the simplest. Most later midgets had connections from the carbs to a fuel vapor canister and tied into the valve cover as well. If your 1275 is leaking oil at the rear, check the PCV or check valve as it was called earlier. I tried to cheat and use my early 948 manifold that did did not have a port for the PCV and my engine leaked badly. I am using my 948 carbs on a later intake now with no problems.
 
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