Jump to content


BestyBlue77

Member Since 08 Apr 2016
Offline Last Active Jan 13 2018 03:51 PM
-----

Posts I've Made

In Topic: Need advice on replacing piston rings B210 A-14

11 January 2018 - 07:28 PM

They are recommended IF you overbore the block and use over size 76.75mm pistons. Will you?


Measure your bore in three places. Measure the piston for each bore. Should be 76mm for an A14. Piston to wall clearance should be between 0.001" and 0.018" give or take. If much over that it should be over bored and over size pistons used. Using a 0.75mm over size ring to make up the difference is not advised. Certainly NOT without some measuring. When compressed the ends may touch or touch when heated up and they will break.

No mention of honing the cylinder walls. If the stock pistons and walls are withing spec the wall will be too smooth to wear the rings in. If using case iron for this you need a special hone.

If going to larger pistons and over boring the finish will be perfectly round and no taper. For this you can use chrome molly rings for much better seal and longer life.


I'm going to be using the stock pistons & everything is within spec. Should I still give the cylinders some fresh cross-hatching? Also what kind of rings would be the best in my case for best performance & longest life? Thanks everyone!

In Topic: Need advice on replacing piston rings B210 A-14

11 January 2018 - 12:43 PM

These are the rings that I purchased: Sealed Power by Federal Mogul. E-365X Standard Piston Ring Set (2) 2.00mm, (1) 4.00mm; Iron; .75mm Oversize. These are recommended by Napa & Oreilly's.

https://napaonline.com/en/p/SEPE365X

In Topic: Need advice on replacing piston rings B210 A-14

11 January 2018 - 12:04 PM

Great! Thanks for the thorough reply! I forgot to mention I just had the head off about a year ago & haven't put many miles at all on it since. The cylinders are in excellent condition & still have the original cross hatching marks with no marks, scratching, or scraps of any kind visable on any of the cylinders. I have a buddy that's a mechanic & he came over to take a look at them & said they were good to go. I should have replaced the rings at that time, but I had a bunch of other projects going on & needed to just get it back together, so I could drive it a while. I did resurface the engine block, so that's good to go as well. Ya, I'm pretty much kicking myself in the butt for not doing it then, but we live & learn, right?! (Hopefully!)

That being said, I bought original sized rings to replace the old ones. I'll post a few pics here in a minute to show ya what I've got.

In Topic: Stock Hitachi carb specs for a '77 B210??

19 March 2017 - 08:04 AM

Don't toss you stock pump. Keep seeking a rebuild kit. That newer unit has a terrible rep.

I never throw anything away! Haha. That's good & bad! I suspect this may be the problem then. When I first reset the float, it runs great, but a few days if driving & it's right back to running like crap & stalling out constantly.

In Topic: Stock Hitachi carb specs for a '77 B210??

03 March 2017 - 07:08 PM

Funny you should say that, because the more I read and researched everything kept pointing back to the needle & float being off. I just used the Datsun Service Manual for my measurements and they are a bit different from what it says in the carb rebuild kit spec sheet. Anywho, I took the top back off removed & sprayed out the needle & remeasured the float adjustments. I also inspected the float and straightened it out I noticed it was a bit wonky. It's dark now so I can't put it back on, but I will first thing tomorrow. Also, I still do have the original mechanical fuel pump, but couldn't find any rebuild kit anywhere for it, so I had to purchase a newer mechanic fuel pump. That's what's on it now. Also, I noticed this carb doesn't have the tiny fuel filter that is normally inside the main fuel inlet on the carb, so that not being there and a possible dirty pre-pump fuel filter would make for one jacked up carbie. Hmmm, I wonder if the gas tank has dirt or rust in it. How could I clean it out if that's the case?