Randalla

L series engine oil dipsticks

    Recommended Posts

    Some time ago I'd collected 8-10 dipsticks from various S30 and S31 engines. At the time I noticed there were three different lengths, measured from the bottom of the rubber stopper to the tip of the dipstick. I have two dipsticks currently that differ in length by 3/8". Does anybody know which sticks are for which block? Theoretically, the amount of oil in an engine could be off by 3/8," potentially translating to being  1/2 to a full quart different. I'm currently running the short dipstick from my L-24 engine in an L-28 F54 block from a 280ZX. It's obviously easy to swap one out for the other but I don't know for sure which is correct for the engine in my car. I'm wondering if the oil pans were shallower or deeper for the different L series 6 cylinder motors and that was the reason for the change in length. Anyone have the answer to this trivia question???   

    Share this post


    Link to post
    Share on other sites

    Measure form the bottom of the stopper to the " Full " line mark. That is the only measurement you have to be concerned about.. Dipsticks should also have the last 5 digits of the Part number  stamped on it.  I believe you will find that measurement is all the same.

    The Nissan Parts catalogs list all 240Z to 280Z blocks as having the same dipstick. 11140-E3002. . I ordered a new dipstick for my  1976  280z Z motor. It was superseded to a newer number with a nice Plastic insulated handle.  I'll look at the stamping numbers tomorrow. 

     

     

    Share this post


    Link to post
    Share on other sites

    Checked this morning to see what part numbers I had on mine and if there was a difference in measurement between the bottom of the stopper and the full line. The dipstick from my L-24 has the same part number you referenced, E3002. The other one I have has the suffix P6500. The difference in measurement from bottom of stopper to full line is 7- 3/16" for E3002 and  6-7/8" for P6500 (5/16"). Memory is a little fuzzy but I seem to recall having other dipsticks with an even different number, E3001 as I recall, but maybe E3000. Would be interested to know if any of you have a part number on your dipstick corresponding to either of those numbers. Chickenman,  thank you for your response. 

    Share this post


    Link to post
    Share on other sites

    Good topic.  I didn't even know!  Could we compile a list based on the engine?  I have a 79 engine in my 76 (with stock 76 intake).  

    When does it change?  based on year?

     

    My stock engine ran out of oil (my fault) due to a rear main seal leak.  I was good about keeping it full, but a few hours of hard driving blew it.  So I know that even though the Z blocks are tough, they can fail.  Something (rod?) blew a hole in my block due to lack of oil.  I have a pic somewhere.

    Share this post


    Link to post
    Share on other sites

    How about a difference in the receiver tube length that is mounted in the block? Might this account for the apparent different dip stick lengths?

    i can hardly wait to get home and peruse my dip stick collection. Why I have a dipstick collection is another question with no answer. ..

     

    Edited by zKars
    • Like 2

    Share this post


    Link to post
    Share on other sites

    14 minutes ago, zKars said:

    How about a difference in the receiver tube length that is mounted in the block? Might this account for the apparent different dip stick lengths?

    i can hardly wait to get home and peruse my dip stick collection. Why I have a dipstick collection is another question with no answer. ..

     

    That made me laugh out loud, thanks!  Bwahahaha!  Perhaps we could utilize them for other purposes?  Like spreading butter on pancakes.  Or checking the temperature of steak on the grill (hmm... looks like it needs about half a quart of 325 degrees)  Or perhaps a weapon of some sort?  Dude was tailgating me, so I launched an oil dipstick at them.  They'll never forget to check their oil again... since it's embedded in their skull".  

    Share this post


    Link to post
    Share on other sites

    I know this is a bit of an inane subject but inquiring minds want to know. Good thought about checking the length of the receiver tube. With all the variations I can imagine there are definitely cars running around with too much or too little oil with owners not even aware of it.

    • Like 1

    Share this post


    Link to post
    Share on other sites

    Now someone will have to determine the correct oil level in the pan.

    Then I.guarantee Blue will put a carb float bowl sight glass in the side of his oil pan to make sure his oil is full. 

    Edited by zKars

    Share this post


    Link to post
    Share on other sites

    From my UK R-Drive fiche, part number 11140-P6500 fits the 280ZX from 10/78 on.

    image.png

    Share this post


    Link to post
    Share on other sites

    OK, now this is getting interesting jerz. The engine the P6500 dipstick came out of is an L-28 with F54 block and dished pistons. It had been freshly re-built by a well known local engine builder. When I got  the engine it had a P79 head, leading me to believe it did in fact  come out of a 280ZX. If that's true, then your information on the P6500 dipstick is probably correct. I measured the  dipstick tubes on both my engines. The one on the L-24 is exactly 3" long. The one on the L-28 is 3 1/8." The difference in the two dipsticks, to show full, is 1/4." At this point, I'll be swapping the L-24 dipstick out, and the L-28 one back in. Tomorrow I will carefully measure how much oil it takes to raise the oil level in the engine by 1/4" on the P6500 dipstick to determine how much difference it might make running an incorrect dipstick. I'll let you know what I learn.

    • Like 1

    Share this post


    Link to post
    Share on other sites

    9 hours ago, Randalla said:

    OK, now this is getting interesting jerz. The engine the P6500 dipstick came out of is an L-28 with F54 block and dished pistons. It had been freshly re-built by a well known local engine builder. When I got  the engine it had a P79 head, leading me to believe it did in fact  come out of a 280ZX. If that's true, then your information on the P6500 dipstick is probably correct. I measured the  dipstick tubes on both my engines. The one on the L-24 is exactly 3" long. The one on the L-28 is 3 1/8." The difference in the two dipsticks, to show full, is 1/4." At this point, I'll be swapping the L-24 dipstick out, and the L-28 one back in. Tomorrow I will carefully measure how much oil it takes to raise the oil level in the engine by 1/4" on the P6500 dipstick to determine how much difference it might make running an incorrect dipstick. I'll let you know what I learn.

    Science Marches On!

    1902_vs_1969.jpg

    • Haha 1

    Share this post


    Link to post
    Share on other sites
    On 9/14/2017 at 6:55 PM, zKars said:

    How about a difference in the receiver tube length that is mounted in the block? Might this account for the apparent different dip stick lengths?

    i can hardly wait to get home and peruse my dip stick collection. Why I have a dipstick collection is another question with no answer. ..

     

    That's the most likely answer. My E-Fast is down right now so there are a couple of things I can't check right now. 

    Edit: Ok. So I just did a side by side comparison of the E3002 Dipstick ( Z ) and the P6502 dipstick ( ZX )

    I measured from the rubber shoulder seat to the high mark on each dipstick. The high matk is what you should be comparing. NOT the overall length. The E3002 measures 7.375 "  to the high mark. The P6502 measures 7.00 " to the high mark. What that means overall.... not a hell of a lot IMHO.

    F54 block on my car, so P6502 is definately correct

     Also considering that I ordered a new 11140-E3002 dipstick, and it was superseded to a 11140-P6502 ( This is in Canada ) .

    Edited by Chickenman

    Share this post


    Link to post
    Share on other sites

    Here you go. Question answered. 11140-E3000 supersedes to 11140-P6500 ( 11140-P6500 supersedes to 11140-P6502):

     

    Back to watching this mornings F1 race!!

     

    ScreenShot002.jpg

    Edited by Chickenman

    Share this post


    Link to post
    Share on other sites

    For what it's worth, the 1/4" difference in dipstick measure translated to just over 1/2 quart to top off the oil in my L-28. 

    Share this post


    Link to post
    Share on other sites

     Probably wouldn't make much difference in the wintertime but being a 1/2 - 3/4  qt. low on oil in hot weather would raise the engine temp.

    Share this post


    Link to post
    Share on other sites

    Ok Guys I have a 77 Skyline kenmeri with 280ZX F54 block but we used the original oil pan from the L24 engine  to make the engine fit on the cross member. I am missing the dipstick for the L24 oil pan. Can somebody help me get a dipstick or a part # for that 77 Skyline 240K GT L24 engine?

    Thank You guys in advance.

    Share this post


    Link to post
    Share on other sites

    well been going over this post in another thread maybe some new info here if anybody can help . I have 1 1983 f54 block and using  a new oil dipstick 11140-p6502 . the dip stick measures 7" from the high mark to the rubber stop on the dip stick .I am only able to but in 4.25 qts of oil to reach the high mark so any suggestions?

    Share this post


    Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now