Neccessary to reBORE or just a hone - severe ring leakage
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Neccessary to reBORE or just a hone - severe ring leakage
So my piston rings are bad, 10 10 15 and 30 are my leakage % based on numerous leak down test. and i burn about 2 quarts a week.
so my question to you is...
Is it neccessary to buy 0.25 overbore and get the pistons matched to bore...or would stock pistons seat properly with new rings and rehone?
What is the difference between deglazing with a dingleberry and rehoning with a stone
What is this "glaze"
What is the name of the tool that measures bore, where can it be bought.
What are the spec tollerances for a b16a2
What is lapping.
How do i know if piston rings are lapped, and how do i lap them.
so my question to you is...
Is it neccessary to buy 0.25 overbore and get the pistons matched to bore...or would stock pistons seat properly with new rings and rehone?
What is the difference between deglazing with a dingleberry and rehoning with a stone
What is this "glaze"
What is the name of the tool that measures bore, where can it be bought.
What are the spec tollerances for a b16a2
What is lapping.
How do i know if piston rings are lapped, and how do i lap them.
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Re: Neccessary to reBORE or just a hone - severe ring leakage (drumminforev)
From the sounds of the oil consumption alone I would overbore by .25mm (.010" thou) after which it would be re-honed. You'll have a new engine essentially and won't have to worry about any of the questions you asked.
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Re: Neccessary to reBORE or just a hone - severe ring leakage (drumminforev)
Originally Posted by drumminforev
So my piston rings are bad, 10 10 15 and 30 are my leakage % based on numerous leak down test. and i burn about 2 quarts a week.
so my question to you is...
so my question to you is...
Originally Posted by drumminforev
Is it neccessary to buy 0.25 overbore and get the pistons matched to bore...or would stock pistons seat properly with new rings and re-hone?
Originally Posted by drumminforev
What is the difference between deglazing with a dingleberry and re-honing with a stone
What is this "glaze"
What is this "glaze"
As for the dingleberry vs. using a stone hone, I'll have to give you my personal opinion on the two. To me, the dingleberry is ok to use as long as the cylinders are in good shape with no deep scratches, the engine isn't high mileage and the cylinders just need a little "scuff" before reinstalling the original pistons and/or new rings. To me it's similar in concept to using a 3M "scuff pad" on your brake rotors or flywheel before installing the new parts. It is far better than putting everything together this way than doing nothing at all. The stone hone does more actual honing in my mind as it deglazes the cylinders and will take out some light scratches in the cylinder walls and creates more of a factory "cross hatch" type of scuff into the bores. Again this should only be done if the cylinder bores are in good shape, if in doubt, have it checked and bored. Either way, you have to be careful using either of these methods since more damage can occur if you don't know what you're doing.
Originally Posted by drumminforev
What is the name of the tool that measures bore, where can it be bought.
What are the spec tolerances for a b16a2
What are the spec tolerances for a b16a2
Originally Posted by drumminforev
What is lapping.
How do i know if piston rings are lapped, and how do i lap them.
How do i know if piston rings are lapped, and how do i lap them.
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Re: Neccessary to reBORE or just a hone - severe ring leakage (00Red_SiR)
thanks for the good info
the engine is not high miles, only 50k. i started burning oil with bad valve seals, which lead to driving with almost no oil, which lead to bad rings.
Would i be able to reliably check the bore roundness in my garage with tis 'dial gauge'?
the engine is not high miles, only 50k. i started burning oil with bad valve seals, which lead to driving with almost no oil, which lead to bad rings.
Would i be able to reliably check the bore roundness in my garage with tis 'dial gauge'?
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Re: Neccessary to reBORE or just a hone - severe ring leakage (drumminforev)
Yikes....I wonder if you'll have any hot spots on your crank or rod journals from low oil..
You would be able to reliably check the bore with the right tools, setup and used properly in your garage and your engine disassembled.
You would be able to reliably check the bore with the right tools, setup and used properly in your garage and your engine disassembled.
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Re: Neccessary to reBORE or just a hone - severe ring leakage (00Red_SiR)
I had a broken rings on my b16,when I tore it apart it the walls were scared a lil, put a good honing on it with some good rings and never had a problem since 30,000 miles and counting with No smoke
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Re: Neccessary to reBORE or just a hone - severe ring leakage (00Red_SiR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR »</TD></TR><TR><TD CLASS="quote">Yikes....I wonder if you'll have any hot spots on your crank or rod journals from low oil..
You would be able to reliably check the bore with the right tools, setup and used properly in your garage and your engine disassembled.</TD></TR></TABLE>
How to check for "hot spots"
and do you know the name of the tools i need to buy, IM getting ready to purchase everything. along with any other parts i should replace, but im not sure what those are
You would be able to reliably check the bore with the right tools, setup and used properly in your garage and your engine disassembled.</TD></TR></TABLE>
How to check for "hot spots"
and do you know the name of the tools i need to buy, IM getting ready to purchase everything. along with any other parts i should replace, but im not sure what those are
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Re: Neccessary to reBORE or just a hone - severe ring leakage (drumminforev)
Hot spots look like a stainless header after you run it...it changes color and turns blue etc....the metal on the journals will look discolored. As far as what the tool names are, I'm not sure...like I said they're some version of a caliper and dial gage, ask a machine shop how they do it and what the names of the tools are or buy the Helms manual to help tell you how to do the proceedure.
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Re: Neccessary to reBORE or just a hone - severe ring leakage (00Red_SiR)
I have some brand new rings...how do i check the ring gap to know if its proper (what is proper also)
I still havent decided if i want to buy oversized pistons and pay for a bore out or just use the stock size ctr pistons i have here with a deglaze.
I still havent decided if i want to buy oversized pistons and pay for a bore out or just use the stock size ctr pistons i have here with a deglaze.
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