Topic: vitara FJT r spec rod wrist pin binding (Read 7970 times)

speedjunky01 · « **on:** May 11, 2010, 05:33:39 PM »

it swings fine in one direction but will not budge in the other any ideas as to WTF would be causing the binding issue with the rod?

figures it has to be #4 too so i can almost see the build done WTF

92CXyD · « **Reply #1 on:** May 11, 2010, 06:24:50 PM »

You may just need some lubricant in the pin area to get worked in.

I had a similar issue with Eagle rods and vitaras so just squirt some light oil in there it will free up. :yes: ;D

ryan89crx · « **Reply #2 on:** May 11, 2010, 07:42:19 PM »

Run a brake cylinder hone through it a couple times. This was common practice with the early version TT rods

chris · « **Reply #3 on:** May 11, 2010, 08:43:06 PM »

word about the hone. Literally a couple passes clean and try. It should only take a couple times.

jagojon3 · « **Reply #4 on:** May 11, 2010, 08:51:51 PM »

Hone, end thread. Most rod sets I've bought have at least one rod that needs a slight hone. Don't overdo it.

speedjunky01 · « **Reply #5 on:** May 11, 2010, 09:00:51 PM »

so i need to get the pin pressed out? WTF

lube is the first thing i tried no go with it

chris · « **Reply #6 on:** May 11, 2010, 09:08:37 PM »

no push it out the side it wants to come out

go to local tool store not nazi corporate america stores and get a brake hone should run about 20 bucks for the size you need with stones

Use plenty of lube on the stones. Make a couple passes try again. Repeat until smooth

Look at racityrex build thread he had to do the same thing

ryan89crx · « **Reply #7 on:** May 12, 2010, 12:24:28 AM »

I did it on my spare set of TT rods/SRPs. They required a bit more than a few passes, but they turned out mint.

I got my hone from Oreily's for like $10

speedjunky01 · « **Reply #8 on:** May 12, 2010, 12:59:10 PM »

ok the ultimate WTF moment, i take the rod/pin/piston apart, put the rod on the pin its moves spins fina all around the rod both ways ZERO problems

im like ok...... clean it all with hot water, rinse with hot, dry it off with the air hose, lube it up put it all together same order as last time and now it binds again

WTF

Joseph Davis · « **Reply #9 on:** May 12, 2010, 01:13:54 PM »

Sounds like pin is bent, binding between piston and rod small end bush.

BTW if Spec R is code for the long rods, I'd sell and buy standard length.

Joseph Davis · « **Reply #10 on:** May 12, 2010, 01:14:35 PM »

Sounds like pin is bent, binding between piston and rod small end bush.

BTW if Spec R is code for the long rods, I'd sell and buy standard length.

speedjunky01 · « **Reply #11 on:** May 12, 2010, 01:27:23 PM »

for some reason the small end is touching the piston WTF FJT

I had a set of 75.5mm vitaras NEW with new pins

the new piston before the rod went on

after the rod went on

you can see scuff marks all over the piston

the old 75mm piston has even more scuffs

WTF FJT

Joseph Davis · « **Reply #12 on:** May 12, 2010, 01:28:30 PM »

Welcome to the aftermarket, sir. This is the LEAST of the problems you'll run into.

speedjunky01 · « **Reply #13 on:** May 12, 2010, 01:29:27 PM »

i just dont get how all others work perfectly fine but not this one

also JD this is the spec for the FJ R

5.394"C.C., .898" B.E.width, 1.890" B.E. bore, 1.771" Crank Pin,
0.7483" wrist pin (19mm).

137mm/25.4=5.934

ApexSilver06MR · « **Reply #14 on:** May 12, 2010, 02:08:56 PM »

i had the first run off of the I beams long rods. they went together fine. i know crxvtec91 had the same problem and had to grind away as well.

not sure why theyre like that. pm fj.

when i had like 3 sets of rods chillin, 1 set had the pistons grinded.

chris · « **Reply #15 on:** May 12, 2010, 02:26:13 PM »

Quote from: speedjunky01 on May 12, 2010, 01:29:27 PM

i just dont get how all others work perfectly fine but not this one

also JD this is the spec for the FJ R

5.394"C.C., .898" B.E.width, 1.890" B.E. bore, 1.771" Crank Pin,
0.7483" wrist pin (19mm).

137mm/25.4=5.934

chinesse machine work welcome to the real world.

speedjunky01 · « **Reply #16 on:** May 12, 2010, 03:40:17 PM »

yeah good point chris

think just having one weigh a tad less will effect the motor a lot? or should i just pull them all and grind it equally so they weight the same on my "jewelers" scale?

I already have 3 in and tqed properly the 3 times and loosen then 4th time is the final with 43ftlbs with ARP lube

chris · « **Reply #17 on:** May 12, 2010, 03:45:34 PM »

I wouldnt worry about the gram or 2 of difference in weight. Considering people have engines with cracked pullies/chipped flywheels that last forever its not worth going crazy over imo.

Also Ill bank they already are all a different weight already refer again to chinesse machine work. Its nothing to go crazy about since so many people have had success with this setup.

crxvtec91 · « **Reply #18 on:** May 12, 2010, 04:13:48 PM »

Yup same problem with mine. Just grind the hump on the piston down. Thats what I ended up doing. Look at my build thread I think I have pic's in there of it.

speedjunky01 · « **Reply #19 on:** May 12, 2010, 10:09:53 PM »

staight from FJT

Danijel.

By your pictures i would say that you are using the H Beam rods?

This is an issue that only happens with the H beams.. WHen you use the H
beam rods you have to grind off a little that part of the piston so that
the rod does not makes contact. This does not compromises the strength of
the piston...

With the D16 I beams this issue does not exist because the rod was
designed to be used exclusielly with the vitara piston

Thanks.
Francisco

i just ground it down and the end result

crxvtec91 · « **Reply #20 on:** May 12, 2010, 11:02:33 PM »

Good work!

speedjunky01 · « **Reply #21 on:** May 12, 2010, 11:13:08 PM »

Quote from: crxvtec91 on May 12, 2010, 11:02:33 PM

Good work!

Thank you sir all great minus the piston to wall of .011 haha

ApexSilver06MR · « **Reply #22 on:** May 13, 2010, 01:37:12 PM »

Quote from: speedjunky01 on May 12, 2010, 11:13:08 PM

Quote from: crxvtec91 on May 12, 2010, 11:02:33 PM
Good work!
Thank you sir all great minus the piston to wall of .011 haha

I had that much in my last vitara motor. it was still pretty quiet. lol. ive heard louder vitara motors with a lot less p2w. my shit was a monster at 20 pounds. dirty 4ths.

speedjunky01 · « **Reply #23 on:** May 13, 2010, 02:27:51 PM »

Then there is hope haha good shit I'll just set up the can to drain back into the block from all the blow by lol.

That was my plan 20psi or higher hope The clutch can stand it

ApexSilver06MR · « **Reply #24 on:** May 13, 2010, 06:12:26 PM »

Clutch from mars with galaxy pressure plate sir.

speedjunky01 · « **Reply #25 on:** May 13, 2010, 06:39:10 PM »

Quote from: ApexSilver06MR on May 13, 2010, 06:12:26 PM

Clutch from mars with galaxy pressure plate sir.

ApexSilver06MR · « **Reply #26 on:** May 13, 2010, 06:49:59 PM »

speedjunky01 · « **Reply #27 on:** May 13, 2010, 06:54:28 PM »

holy fucking leg workout!

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Author Topic: vitara FJT r spec rod wrist pin binding (Read 7970 times)

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chris

chris

chris