Bent pushrods

MarceloCabello · Post by **MarceloCabello** » Wed May 21, 2003 6:57 pm

I have a stock 1600 cc engine on my dune buggy, however when I pulled the heads after about 40 hrs of work to replace a damaged pushrod guide tube found that 4 pushrods were bent about 4 to 5 mm in the center in an arch form. I did not expect that and pulled all the pushrods out with out taking note of where they belonged so no clue about that.
I have checked springs, they are standard and have about 0.006" clearence when compressed, and can not imagine what could have caused the problem.
I am reassembling the engine with all new original VW pushrods and I'm not sure if the problem is going to happen again.
By the way I have a cutout rpm limit of 4800 so overrevving should not have been the cause.

vicsvw · Post by **vicsvw** » Wed May 21, 2003 8:25 pm

.006 is not enough. The Valve Springs should be at least .040 from coil binding.
"Parts Book" Schematics and VW part numbers. -> http://www.vwhelp.com
---------------------------------------------------------------------

Marcelo Cabello · Post by **Marcelo Cabello** » Sat Jun 28, 2003 3:03 pm

Thanks for the advice, probably someody along the lifetime of the engine changed the springs, I have replaced them and really clearence is greater by sight even if I did not had a gage on hand to check but I will.