Interesting new product from AA

[Dan Ruddock]

https://aapistons.com/collections/rocker-arms/prod...bly-type-1

Somebody else can be the Guinee pig. I won't buy a set.

[PatJr]

wow, those are cool looking
wonder how hard they are workout the geometry for?

1.5 ratio, a bit radical for me but good to see something new
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1970 Transporter a orange one
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[Dan Ruddock]

[94touring]

Anyone happen to know what their 1.15 measure out to be?

These rollers would be nice in 1.25s for that price, provided the castings/materials are quality. Had a set of affordable roller 1.5s that broke an arm on a non vw car in the past.

[Brian_e]

I will add a set to my next order, but that 1.5 is a pain to use with most of the normal easy to get cams I would consider. I will cross my fingers and hope they come out at 1.4. 😂

I am trying to deal with Scat 1.25 rockers right now that measure 1.37. It really starts to mess with plans when they lift WAY more than expected. 😏

Brian
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www.type-emotorsports.com

[Dan Ruddock]

My .366” lift #252 cam will work well with a 1.5 ratio.

[Dan Ruddock]

The blocks, end caps and shafts all look to be transplanted from their 1.4 rockers. Why did they bother to put bronze bushing in when aluminum against steel is fine? Very good likelihood that they will come to 1.5 just like their standard rockers, I guess they measured it this time .

[tattooed_pariah]

Hasn't Pauter been offering a 1.5 ratio rocker arm set for years now? this looks like an AA copy of the Pauter stuff..

like the OP said though, someone else try it! I wanna know but can't afford to experiment
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-pariah (just a novice from "that other VW site")
'72 Volksrod "Effigy"

"Never worry about stepping on people's toes. People who get their toes stepped on are either sitting down, or standing still on the job."
-Admiral Arleigh Burke, USN(ret.)

[jeff68]

Consider - Rollers are suited to go round and round not back and forth....

[jpaull]

I like that they are pressure lubricated and use bronze bushings instead of the needle bearings. Really looks tailored to roller cams with the 1.5 ratio. If they were made for the street crowd they would come in 1.3/1.4's.
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[email protected] MPH 1/4 Mile & 8.1 @ 83.7MPH in 1/8 Mile with Mild Type 1 VW Mag Case 2234cc commuter engine in stock weight bug w/only .491 total lift(CB2292 Cam), 42x37 heads, 48idf's, Street tires, Belt on, Mufflers, Pump gas, video of the run here: https://youtu.be/M3SPqMOKAOg

Transmission by MCMScott:
Rhino case, Klinkenberg 4.12, Superdiff, 002 mainshaft with 091 first idler. Weddle 1.48 Third & 1.14 Fourth.

[Dan Ruddock]

I will have a set of these rockers in a few day and will report back my findings along with pics. I will also test them in my 2234cc engine once the car is ready for it. I am in the middle of doing the gearbox right now. I will get a hard number for the actual ratio.

As some have stated earlier about too much ratio, again I repeat myself, just got to pic the right cam. If these are the ratio advertised (most likely) they will be fine. Most 1.4's on the market today are close to 1.5 or are 1.5 anyway. They should reduce guide wear with the roller tip. My biggest concern is how well will the roller tip holds up and availability of replacement parts.

Dan

[vwracerdave]

The advertised ratio numbers are measured on a stock VW heads using a stock VW cam. Rockers can have a different ratio on every different brand of heads and every different cam used. There is no way to say exactly what ratio you will get on any performance engine.
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2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK

[Dan Ruddock]

[Alstrup]

[Erik G]

[Dan Ruddock]

The people with stock cams will use the $150 1.4 rockers.

[slalombuggy]

Why the hell wouldn't they make a 1.3 or 1.4 ratio. I gotta think the market for 1.5 rockers is pretty small. I love my Pauters, but gawd dam, the last set cost me $1000. It would be nice to have a spare set in the race box, but damn if I can afford that.

Be interesting to see how they measure out and if they ever come out with smaller ratios. I gotta think 1.4s and 1.3s would be way more salable.

[Brian_e]

A set of these new rockers showed up today.

I haven't mounted them on anything yet. Pretty standard parts for any rocker set. The rollers have about .020" side play, and they seem a touch loose on the shaft, but they will need to get oil in them. The rocker shafts have been heat treated and ground, end caps are standard, shims are included, but look like the standard thickness'. Bummer they are so heavy.

Brian
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www.type-emotorsports.com

[Dan Ruddock]

Brain, I just got my set too. I am measuring things now and will have data shortly. Looks like the roller pins are crimped in place and will be difficult to replace a roller if a failure happens. Not sure what type of roller tip is used, oilite, needle or ball? Who knows how durable the roller will be long term. Weight is close to most China forged steel rockers. If you want a light weight 1.4 rocker, the CB is the best I have found. Looks like these rollers will require about a .130" longer pushrod than the typical forged set.

The shafts are also moved about .050" higher than normal due to the necessary added thickness of the underside of the bearing area to keep them from rubbing against the pedestal. The dumb move of adding bushings made this necessary, aluminum against steel works fine, ask Pauter.

I will measure the real ratio shortly and check the half lift geo. Thanks for the pics, now I don't have to do it.

Edit: I just measured 1.53 with a .366" lift cam (my Web 252) and zero lash. I like the big ratio, choose a cam that takes advantage of it. Half lift looks very close to 90 degrees. On the engine I am doing this on I would shave the blocks .040" but this is not a must, the roller tip should make perfection not as necessary.

One other thing, The pushrods are not centered well in the pushrod tubes. If someone want to run my 7/16 pushrods shaving the thrust of the blocks and shafts would be a good idea, off center to the left but good vertically. Head castings used is a factor too.

Plan on running these once I finish doing my cars transmission. Not happy that I will have to make up another set of pushrods.

Dan

[rayjay]

Interesting tidbit. I watched a vid of a roller tip rocker and was surprised to see that the tip spins at high speed when not in contact with the valve. It makes perfect sense once you are made aware of the phenomenon. The roller skids to a halt as valve lift begins.