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#341445 - 04/28/15 03:09 AM Re: 235 distributors [Re: junkyardjeff]
bobg1951chevy Offline



Registered: 02/17/08
Posts: 3339
Loc: Hendersonville, N.C.
#2 cylinder ..... somewhere in one of your threads, I recall you mentioning ( I think ) that #2 was a sleeved cylinder. Is that correct ?

Thinking, even if it was a sleeved cylinder, I cannot recall having a sleeve create an "engine noise concern".

I have driven I 75 to I 71 to get to northern Ohio so many times ( family is in Mentor, Ohio ), certainly would give that 235 a listen, but I have no immediate plan to get to Ohio real soon.

_________________________
1951 Chevy Styleline Deluxe 2 door sedan. Purchased in 2000.
1951 Chevy Styleline Deluxe Sport Coupe. Purchased in 2014.
1969 Chevy Corvair 500 Coupe. Purchased in 2017.


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#341458 - 04/28/15 01:01 PM Re: 235 distributors [Re: bobg1951chevy]
junkyardjeff Offline

1000

Registered: 01/17/07
Posts: 1195
Loc: Dayton Ohio
I am thinking #2 was sleeved but that was 25 years ago when I rebuilt the motor so my memory is a little fuzzy,it looks like I will be dropping the pan and pulling the head to get #2 piston and rod out to see what is going on and report back. If alot was not done to that block I would just run it until it blows but I want to see what went wrong.
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#341476 - 04/28/15 05:53 PM Re: 235 distributors [Re: junkyardjeff]
bobg1951chevy Offline



Registered: 02/17/08
Posts: 3339
Loc: Hendersonville, N.C.
Originally Posted By: junkyardjeff
I am thinking #2 was sleeved but that was 25 years ago when I rebuilt the motor so my memory is a little fuzzy,it looks like I will be dropping the pan and pulling the head to get #2 piston and rod out to see what is going on and report back. If alot was not done to that block I would just run it until it blows but I want to see what went wrong.


Don't believe it will KABOOM, based on your descriptions.

You have spoken of a "rattle", not a "knock".

I'm still thinking of a timing issue or a runaway, loose piece of carbon, bouncing on top of a piston.

Time will tell. dance
_________________________
1951 Chevy Styleline Deluxe 2 door sedan. Purchased in 2000.
1951 Chevy Styleline Deluxe Sport Coupe. Purchased in 2014.
1969 Chevy Corvair 500 Coupe. Purchased in 2017.


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#341514 - 04/29/15 11:46 AM Re: 235 distributors [Re: bobg1951chevy]
donsbigtrucks Offline

1000

Registered: 04/25/08
Posts: 1194
Loc: WI
I think the issue is with the piston/wrist pin. If it was a rod bearing it would have let loose by now after running it for a couple years.

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#341525 - 04/29/15 04:02 PM Re: 235 distributors [Re: donsbigtrucks]
bobg1951chevy Offline



Registered: 02/17/08
Posts: 3339
Loc: Hendersonville, N.C.
Originally Posted By: donsbigtrucks
I think the issue is with the piston/wrist pin. If it was a rod bearing it would have let loose by now after running it for a couple years.


A valid point .... no KABOOM on this engine.
_________________________
1951 Chevy Styleline Deluxe 2 door sedan. Purchased in 2000.
1951 Chevy Styleline Deluxe Sport Coupe. Purchased in 2014.
1969 Chevy Corvair 500 Coupe. Purchased in 2017.


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#341578 - 04/30/15 03:56 AM Re: 235 distributors [Re: bobg1951chevy]
junkyardjeff Offline

1000

Registered: 01/17/07
Posts: 1195
Loc: Dayton Ohio
I have been hearing the noise for at least 10 years.
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#341591 - 04/30/15 11:36 AM Re: 235 distributors [Re: junkyardjeff]
donsbigtrucks Offline

1000

Registered: 04/25/08
Posts: 1194
Loc: WI
Drive it like you stole it, you'll find the noise.

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#341595 - 04/30/15 12:55 PM Re: 235 distributors [Re: donsbigtrucks]
junkyardjeff Offline

1000

Registered: 01/17/07
Posts: 1195
Loc: Dayton Ohio
I need it to make the noise all the time so I can find it so I am going to run it hard.
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#341774 - 05/02/15 04:11 AM Re: 235 distributors [Re: junkyardjeff]
junkyardjeff Offline

1000

Registered: 01/17/07
Posts: 1195
Loc: Dayton Ohio
Dropping the pan this weekend,the noise got a little louder today and was able to trace to #2 so time for the motor to come apart. I hope its a cracked piston and not a bad rod bearing,if its a bad rod bearing the other motor is going in.
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#341824 - 05/03/15 03:25 AM Re: 235 distributors [Re: junkyardjeff]
junkyardjeff Offline

1000

Registered: 01/17/07
Posts: 1195
Loc: Dayton Ohio
Its the rod bearings and I think I did not clean the oil passages in the crank good enough and the bearings are scarred and the upper halves are down to copper with only 10,000 miles,crank looks good so I am going to put new bearings in and see how it does.
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