will i have problems?

I will be getting my 54 235 back soon from rebuild and it had to be bored .60 over (was .40 over already and two cylinders were rough) ive had my rad to the shop and gone trough and i will be putting a new thermostat in when i get it back ive had people say that much of a bore is going to cause me to over heat can anyone tell me if i will have problems thanks in advance

 

According to a post on the thread below, in the 50s, many 235s were bored 3/32's (.09375) to give 248 cid.

http://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=450658

And this thread talks about going .080 and even .100 overbore on a 235

http://www.inliners.org/ubbthreads/...00&PHPSESSID=5431feccbd38ff4e7d08c25aa4811a0d

 

Patricks has pistons for a 235 that go .010, .020, .030, .040, .060, .080, .100, .110 and you can even get them at .125 but I dont know who has them on the shelf.

Mine is .080 now and has a total of 255,000 miles all together on all of the rebuilds. 60 is nothing to worry about

 

Alright guys thanks for the info ive been sweating it i got the motor for free but the rebuilds another story just making sure im not wasting my money

 

My54 235 is also bored 60 over. I too have a new core in a stock radiator and run 150 on Auto Meter gauge and sender. It's seldom I see anything much higher than that. I say no problem too.

 

I agree. With a good radiator you should have no heating problems. Good luck.

 

There is never a guarantee you won't encounter some kind of casting defect in your engine block. It can happen on any casting new or old. Fortunately it doesn't happen often.

As a guard against variations in the casting process, when engines like yours were made it was standard practice to make cylinder walls extra thick. Per what others have said, I wouldn't be worried about going + .060.

 

I had one in a ton truck that was .090 & -.030 on crank & rods --it was always run hard and never had any problems

 

I just had a 351 Ford block bored 60 over and when I asked my machinist if that was ok he laughed and said "look at a 30 thousandths feeler gauge and imagine that much being taken off of each side of the piston. Don't worry about it."

You should be fine too.

Don

 

I would imagine these days that you'd want to be running a 180-190 degree thermostat for best performance and economy. That's not too hot for any engine.

 

Also remember we are dealing with block pre-"thin wall castings". .120 wouldn't bother me a bit, in most cases of older blocks. I'm sure there are exceptions but, in general, no.

 

Yea ive bought a new thermostat, had the rad worked over by a shop with new cap and will be buying new hoses aswell also i have a new waterpump just trying to cover my *** with this rebuilt motor

 

ive run some old blocks with a 80 over and never had a problem with over heating.i also sold pistons to farmers for their equipment that were 125 over and thats a machine that crawls across a feild and never had one say that it was overheating.it just depends on the condition of the block after the bore.

 

Sounds like "people" don't know how to set up a cooling system properly. All the 235s I've set up were easy to keep cool. Talk is cheap, even cheaper after a few beers.