clark ranger 664 disection

tantoy · April 18, 2015, 11:07:04 AM

Good work, reminds me of what I was doing about a year ago on my Garrett

teakwood · April 18, 2015, 12:25:29 PM

Keep the pics coming! Very intersting!

treeslayer2003 · April 21, 2015, 08:55:08 PM

had a couple hours, started striping it down. here we can see the converter separated from the engine. this fiber gear is whats wrong when a clark will run but do nothing.

seabee, idk if you can see it, but what do you think of the gear? all teeth are there, only a little flaking from the edges. i have a good used one just like it. it is the fiber, not the hard plastic.

beenthere · April 21, 2015, 09:05:29 PM

Camera flash not working? All pretty dark from what I see (or don't see

)

Looks like a project tho.

treeslayer2003 · April 21, 2015, 09:06:39 PM

i may have had the flash off......sorry.......modern technology lol

North River Energy · April 21, 2015, 10:56:14 PM

Check the diameter difference on the converter pilot stud and it's bore. The last fibre I did had been pounded to death on account of a worn bushing.
If memory serves, it went back together with a tight clearance/slip fit. Maybe a few thousandths?

treeslayer2003 · April 23, 2015, 05:23:55 PM

who here is hot on detroits? seabee? kiko? bushmechanic? i have geartrain timing questions..........i been reading lol, do i want std, or advanced? the book says all later engines had advanced........i read some where this can cause overheating.

back story; this engine was rebuilt just before i got it, it was never right, hard to start, took a second to spool up and would over heat easy in the summer. i put in a new radiator,water pump, stat and fan to no avail. a tune up with new injectors did not help. it did not use any oil or water.

so far the head looks good, cam and rollers look good. i knew it had a bad piston but it was screwy before that happened. i want to straighten her out while i'm here with it out and apart.
any body got any insights?

bushmechanic · April 23, 2015, 08:41:28 PM

Go with the normal timing on that 353 and rebuild it right and you will get years out of that old beast. Where are the marks on it now? Take a pic so we can see. I use an old service manual and have never had issues with hard starting when rebuilding, but in saying that they can be very confusing with all the marks for the left and right hand engines all on the same gear. Also there are many versions of rebuild, if you know what I mean.The best being the dupont overhaul :D

treeslayer2003 · April 23, 2015, 09:35:20 PM

Quote from: bushmechanic on April 23, 2015, 08:41:28 PM
Go with the normal timing on that 353 and rebuild it right and you will get years out of that old beast. Where are the marks on it now? Take a pic so we can see. I use an old service manual and have never had issues with hard starting when rebuilding, but in saying that they can be very confusing with all the marks for the left and right hand engines all on the same gear. Also there are many versions of rebuild, if you know what I mean.The best being the dupont overhaul :D

i have the manual. that is my thought as well to use standard timing, glad to hear you say that. supposedly they did a complete but who knows. liners are not wore, i will replace the bad piston.
i don't have the back off yet, i need a stand or to build feet, pics will be forthcoming then.
i suspect they timed it advanced, only thing i can think of would make it act that way......but i'm open to suggestions.

ga jones · April 25, 2015, 07:06:39 PM

Sounds to me like they had it advanced.

nhlogga · May 13, 2015, 01:46:13 AM

How's the project coming?

treeslayer2003 · May 13, 2015, 07:52:13 AM

Quote from: nhlogga on May 13, 2015, 01:46:13 AM
How's the project coming?

i ain't had time to mess with it much lately. i did make a plate to mount it to a stand.

treeslayer2003 · August 20, 2015, 10:23:15 PM

ok, i finely got back to this. i swore this thing had a bad piston.........they look fine, as do the liners and head. what else would make it slap and miss?

North River Energy · August 21, 2015, 07:25:39 AM

Are the clearances on the wrist pin bushings/con rod bearings all the same, and are all the rods the same/same length/straight?
Do the cylinder bores measure the same, and is there any taper/oval?

If all clearances are at or very close to the wear limits, there is a possibility that if the rings were renewed when the engine was 'rebuilt', they wouldn't seat properly, and thus compression would be uneven.
Once the engine got up to speed, the effect would become somewhat less significant/noticeable, but things just wouldn't be 'right'.

This is not specific to the 53, but based on an automotive situation I ran into years ago.

loggah · August 21, 2015, 04:23:38 PM

Bent rods will cause a engine to act really numb they only got to shorten the throw by a few thousands to change timing and compression, i had a 4-71 in a barko that had 4 tweeked rods ,start hard and wouldnt rev up very high .

treeslayer2003 · August 21, 2015, 04:32:12 PM

rods look good loggah. but i do know what your saying, i seen that before from water intrusion.

treeslayer2003 · August 21, 2015, 04:38:04 PM

treeslayer2003 · August 21, 2015, 07:36:35 PM

timing, standard timing all the Os sould line up at some point right? i can't get any thing to line up but the cam and balance gear Os, nuthing else ever lines up. tell me this is whats been wrong with this engine.

snowstorm · August 21, 2015, 08:46:54 PM

i ran into that with a iveco. had all the timing marks lined up you could turn the crank over and over and they would not line up again. so i asked someone that had worked on them for a long time. he said they will line up again just may have to turn it a 100 times

treeslayer2003 · August 21, 2015, 08:58:59 PM

Quote from: snowstorm on August 21, 2015, 08:46:54 PM
i ran into that with a iveco. had all the timing marks lined up you could turn the crank over and over and they would not line up again. so i asked someone that had worked on them for a long time. he said they will line up again just may have to turn it a 100 times

guess i'll have to turn it 50 more times tomorrow lol

teakwood · August 22, 2015, 09:18:44 AM

Correct me if i am wrong but should they line up every second rev? Like a 4 stroke

treeslayer2003 · August 22, 2015, 09:21:17 AM

Quote from: teakwood on August 22, 2015, 09:18:44 AM
Correct me if i am wrong but should they line up every second rev? Like a 4 stroke

can't remember teak........the cam either turns the same speed or twice as fast. i just can't remember. in any event, i am fairly certain its been turned over enough that if they were ever gonna line up they would have............now where are all the mechanics?

teakwood · August 22, 2015, 09:22:33 AM

But you seem to be a good mechanic not?

treeslayer2003 · August 22, 2015, 09:23:09 AM

also, to the mechanics, would you run those pistons again? them shiny spots bug me as does the play at the wrist pin.....................

treeslayer2003 · August 22, 2015, 09:25:25 AM

Quote from: teakwood on August 22, 2015, 09:22:33 AM
But you seem to be a good mechanic not?

lol, i am super good at replicating what i see. i can take any thing apart and put it back together..........but now, things i did 20 years ago are getting foggy.....don't trust myself lol. really just looking for opinions. and i never ran into this timing thing before.