T1 Con rod info with Wasser pistons

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jackstraw
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T1 Con rod info with Wasser pistons

Post by jackstraw » Sat Oct 07, 2017 7:36 pm

Greetings. The pistons are floaters. The T1 has 22mm pins and the Wasser has 24mm pins. If I wanted to run a T1 rod it stands that the small end needs opened up for the larger pin.

Will I loose strength if this is done? I'm looking at a 5.5" rod to mimic what Vanistan used to use
I think this a rod that will work. Scat ICR5500-8740 VW JOURNAL 2.165"/55mm 5.500"/139.00mm

AMBROSIA
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Re: T1 Con rod info with Wasser pistons

Post by AMBROSIA » Sun Oct 08, 2017 3:13 pm

I had a set of scat I beams machined to wbx size.
Image
Image

Yet to run them so I can't comment on strength, but I won't be pushing the rpm's as it's in a street application.

jackstraw
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Re: T1 Con rod info with Wasser pistons

Post by jackstraw » Sun Oct 08, 2017 3:34 pm

I grabbed these pic's from the samba. Wasser vs T1. Wasser small end definitely has more meat. Looks like two oil holes for pin.
T1 rod A bit smaller on the small end. Your pic looks like you only had to hone out some of the bushing . Seems doable then.
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Marc
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Re: T1 Con rod info with Wasser pistons

Post by Marc » Thu Oct 12, 2017 2:31 pm

For a given stroke (and of course, piston weight), longer rods will cause less stress on the wristpin and small end of the rod since the piston will approach & depart TDC at a slower rate. I'd be more leery of hogging out the rod if it were shorter than stock.

If you've ever wondered what the rod angle @90°is for a particular rodlength-to-stroke ratio, there's a formula at the bottom of this page: http://victorylibrary.com/mopar/rod-tech-c.htm

jackstraw
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Re: T1 Con rod info with Wasser pistons

Post by jackstraw » Mon Oct 16, 2017 9:21 pm

Thanks for the reply. I've always been partial to a longer rod to take advantage of a wee bit extra top and bottom dwell.

Scat wants $75 per rod to hone out for 24mm pins. Seems steep. Maybe they wrote me a typo .
I'll check the local machine shops.

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pocketrocket
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Re: T1 Con rod info with Wasser pistons

Post by pocketrocket » Sat Nov 04, 2017 12:17 pm

I had Scat hone a set of T-1 rods to wbx size years ago. They lasted 7,000 miles be fore the bushing broke up and started to make noise. I upened the small ends of the Scat rods for thicker bushings engine now has 44,00 miles going strong. I would not use honed Scat rods again.

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pocketrocket
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Re: T1 Con rod info with Wasser pistons

Post by pocketrocket » Sat Nov 04, 2017 7:20 pm

To use the stock Scat rods I have had made CNC bushing for the pistons. Press them in the pistons seat them, hone to T-1 pins, I had to machine the ends of the pins to the WBX lenght, I have 2 test engines with those bushings, both engines are doing fine. I have the bushings in stock.

jackstraw
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Re: T1 Con rod info with Wasser pistons

Post by jackstraw » Sat Nov 04, 2017 8:29 pm

* self edit , sorry *

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