Check valve / recirculation replacements? loopers and crossflows

[ct1762@gmail.com]

Anyone ever try replacing the check valves with el-cheapos from ebay/amazon? The prices are outrageous @ 105ea. plus the ride. I am talking about the recirc valves going from the intake manifold to the cylinders both port and starboard. For example, doing a looper V4 and they take 4 of them... thats $400+ for all valves if they are clogged, and cleaning them rarely works. I was thinking of using a cheap 1/8npt strait barb, and a $5 check valve you can get on the above mentioned sites. anyone see any issues with this besides getting ones with the correct size nipple? here is what i would be replacing:

with something like this maybe

 

[dingbat]

A quick goggle search turned up Evinrude part number 034872- nipple for $9.87 ea

 

[dingbat]

Ok, sorry wrong part

Brass with ss spring, ball and screen. Should not be hard to clean at all.

Acetone in a sonic cleaner will do the trick.
Soak in acetone and blow out should work as well

 

[airshot]

If your motor is of no value to you then swapping good oem parts for no brand junk parts sounds logical and might work...but what if it doesn't ??

 

[Terrapin]

Check out Leaders RPM. I purchased mine through Leaders at around $23.00 each.

 

[ct1762@gmail.com]

If your motor is of no value to you then swapping good oem parts for no brand junk parts sounds logical and might work...but what if it doesn't ??

i rebuild about 15 OMC powerheads a year. I was simply asking if anyone has done this as its simply a 1 way valve.

 

[ct1762@gmail.com]

Ok, sorry wrong part

Brass with ss spring, ball and screen. Should not be hard to clean at all.

Acetone in a sonic cleaner will do the trick.
Soak in acetone and blow out should work as well

no. they are so delicate 80% of the time they cannot be restored. tried all the tricks, including my ultrasonic after a week in chem-dip many times. 8/10 of them sort of come around, but not quite the original flow.

 

[dingbat]

tried all the tricks, including my ultrasonic after a week in chem-dip many times.

As you have found, Chem-dip is not going to clean brass and stainless very well.

You need alkalinity (pH 1) to clean brass and stainless. Diluted sulfuric acid works very well. As do a number of soak cleaners developed specifically for the plating industry