Oh boy, valve knock? Video inside

How-to's and repair secrets for your 4WD can be found here. Have a question? Ask it in here!
User avatar
Petros
Highest Ranking Member
Posts: 11854
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Oh boy, valve knock? Video inside

Post by Petros »

did you find oversized pistons? usually the pistons with a matching ring set are in the same piston kit.

that kit shows rings included. you choose the oversize you need when ordering it. you get 3 choices: standard, +.020", or +.040" . I would go with the 0.020" over sized so if you get 100k plus miles on it, you can go one more oversize to .040" on a future rebuild. but going with the larger oversize will give you a small amount more displacement, and slightly more HP. not much, but it will be larger displacement.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)
User avatar
Neu
Highest Ranking Member
Posts: 1183
Joined: Tue Nov 06, 2007 7:59 am
My tercel:: 1985 SR5 No Mods
Location: Hillsboro, Oregon, USA
Contact:

Re: Oh boy, valve knock? Video inside

Post by Neu »

I'm going .020 oversized so I can do another rebuild later on if needed.

So I actually didn't get the pistons from the kit supplier. I misunderstood on the phone so I'll have to find a set of those, which I think I did.
Last edited by Neu on Tue Jun 14, 2022 8:24 pm, edited 1 time in total.
User avatar
Neu
Highest Ranking Member
Posts: 1183
Joined: Tue Nov 06, 2007 7:59 am
My tercel:: 1985 SR5 No Mods
Location: Hillsboro, Oregon, USA
Contact:

Re: Oh boy, valve knock? Video inside

Post by Neu »

Okay, so, correction. They did send me the pistons but they were shipped separately and took a few extra days. So I believe I have everything that I'll need. Finding a local machine shop with decent recommendations was somewhat of a pain but I think I found one. I should be all set to get underway on this.
Last edited by Neu on Tue Jun 14, 2022 9:35 pm, edited 1 time in total.
User avatar
NWMO
Highest Ranking Member
Posts: 1303
Joined: Wed May 20, 2015 1:08 pm

Re: Oh boy, valve knock? Video inside

Post by NWMO »

Good luck Neu! I rebuilt a 4a for the Rusty Frog in a similar fashion. I can be a bit of a “nervous Nellie” on these types of projects, but things typically work out well.

Chris
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain
User avatar
Neu
Highest Ranking Member
Posts: 1183
Joined: Tue Nov 06, 2007 7:59 am
My tercel:: 1985 SR5 No Mods
Location: Hillsboro, Oregon, USA
Contact:

Re: Oh boy, valve knock? Video inside

Post by Neu »

The goal now is to find a machine shop that can do it. Apparently all of em around here are booked up pretty solid(racing season) so I'm having to rely on friends of friends. It'll get done though.
Post Reply