Type 4 pushrod in Type 1 engine

[Maticus]

So, I'm putting together an engine with the help of a local shop. It's a warmed up 1600DP with a CB 2280 "cheater" cam that I also got a set of single HD springs for it. I've got the solid rocker shafts and swivel feet adjusters using the stock 1.1:1 rockers. With most of the valve train figured out, I've seen a lot of debate about pushrods with upgraded springs. I've heard that stock rods are okay or stock rods will bend with HD singles, with lots of arguing between the two schools of thought.

So, I'm digging around the shop looking for a spare thermostat (Yes, I run flaps and a thermostat on my engine, aren't I the odd one) and in the midst of this perusing, I find a big ol' stack of pushrods on a shelf, and see a couple of thicker ones among the bunch. I ask my mechanic buddy about them and he tells me they came out of some bus engines, Type 4 pushods. I sort through the stack and find at least enough healthy looking rods for a set of 8, and a couple spare. I also note that they are little shorter than the T1 rods, but also their much sturdier appearance.

Since I'll be flycutting the heads to bump the compression and have an altered valve train, it looks like I'll potentially need shorter pushrods anyway, making the T4s a potential replacement.

Basically my question is: Are the T4 pushrods considerably stronger than the T1 pushrods, enough to handle single HD springs, or am I judging a book by its (thicker) cover?

Or should I just not worry about the stock rods, even if I have to shorten them, which I'm told some people have done.
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1969 Rust Bugget AKA "Blitzkrieg"

[Dan Ruddock]

Biggest problem is getting them to clear the pr tube. I have done it but was more hassle than it was worth. Heavy but very strong. Dan

[Maticus]

[modok]

You could taper them to help clear the ends of the pushrod tubes, and for most purposes they will need to be lengthened, which may be possible by putting on different ends. Sounds like a lot of work.

[rockurob]

I run shortened stock VW alum pushrods with my single
HD springs with 1.25 rockers..... with swivel feet and
rocker shaft upgrade kit.... I had to shorten my p-rods...
just pull one end and trim, using a plumbers copper tubing
cutter.....
I conferred with this member from Missouri before doing this.... he was
running a single port turbo making 150HP+ in a buggy...
he was utilizing stock VW alum p-rods
http://www.thesamba.com/vw/forum/viewtopic.php?t=271444
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[slalombuggy]

I ran stock pushrods in my race buggy with a 110 cam, 125 rockers and HD singles for years with no problems

brad

[mark tucker]

the 1.1 rockers are more sensitive than most others as far as geo go,s. so get it right. they do not like to be too low like most other rockers do.so a shroter pushrod probably isant the answer. also the rockers need to be clearanced for the adjuster&lashcap thickness or it will act like the rocker is too low so.....be sure to clearance the rocker so the adjuster can screw up farther and put the rocker back to the proper angle.

[Maticus]

Thanks for the input guys! I'll just run stockers for now since the T-4s seem to be more hassle than they're worth. Hopefully I can get my first rebuild done soon, I can't wait to drive my beetle again!
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1969 Rust Bugget AKA "Blitzkrieg"