Hello all!
About to take on a new project and thought I'd get a thread going for some questions I have now and all of the other ones that will certainly come up!
Here's the backstory...
I have a 65' 122s with the b18 and 4spd trans. I've done a full tuneup and upgraded to electronic ignition and higher flowing air filters. The car is a dog, as in I can only go 35mph up steep mountains. I did a compression test on the motor and all of my numbers were in the 80's and 90's. Checked the valve adjustment and they were decent. So I decided a rebuild or engine upgrade was in order. I picked up a late 60's/early 70's AQ130 (a B20 in a boat). It didn't run but rotated freely.
Current...
I started tearing the b20 down last night. Lots of corrosion in the coolant passages. The cylinders are also covered in junk (dirt/corrosion I believe). The head looks pretty rough around the valve faces as well. I'll try to post pics/measurements of the bore this weekend.
So the plan for the block was to hot tank, hone, re-ring, all new bearings and seals. For the head I wanted to hot tank, hardened valve seats and 3-angle valve job.
I'm hoping to increase my horsepower to a drive able level while keeping it low budget. This does not need to be a race car. Peppy is good enough. Reliability is important.
First question, any recommendations for the build? Should I consider upgrading the cam? Seems to be an expensive option.
Secondly, what are the main differences between the marine and auto versions of the b20? Have any of you done this swap?
Finally what's the best way to deal with all of the corrosion?
If you want more info here a thread that explains the journey so far...
http://www.turbobricks.com/forums/showthread.php?t=310252&page=4
Thanks!
About to take on a new project and thought I'd get a thread going for some questions I have now and all of the other ones that will certainly come up!
Here's the backstory...
I have a 65' 122s with the b18 and 4spd trans. I've done a full tuneup and upgraded to electronic ignition and higher flowing air filters. The car is a dog, as in I can only go 35mph up steep mountains. I did a compression test on the motor and all of my numbers were in the 80's and 90's. Checked the valve adjustment and they were decent. So I decided a rebuild or engine upgrade was in order. I picked up a late 60's/early 70's AQ130 (a B20 in a boat). It didn't run but rotated freely.
Current...
I started tearing the b20 down last night. Lots of corrosion in the coolant passages. The cylinders are also covered in junk (dirt/corrosion I believe). The head looks pretty rough around the valve faces as well. I'll try to post pics/measurements of the bore this weekend.
So the plan for the block was to hot tank, hone, re-ring, all new bearings and seals. For the head I wanted to hot tank, hardened valve seats and 3-angle valve job.
I'm hoping to increase my horsepower to a drive able level while keeping it low budget. This does not need to be a race car. Peppy is good enough. Reliability is important.
First question, any recommendations for the build? Should I consider upgrading the cam? Seems to be an expensive option.
Secondly, what are the main differences between the marine and auto versions of the b20? Have any of you done this swap?
Finally what's the best way to deal with all of the corrosion?
If you want more info here a thread that explains the journey so far...
http://www.turbobricks.com/forums/showthread.php?t=310252&page=4
Thanks!
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