Rods for ALH build
- Thread starter noisy1eh
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PakProtector
Veteran Member
Get better pistons too. There is one kind that can use ALH/ALH style rods that has the improved oil cooling gallery, the asv ). If you go with the slightly lower compression ARL pistons, you can use tapered small end, 50.6mm big end rods( aka BEW/BRM style and get the good piston crown thickness, good oil cooling gallery and lower compression rings). You will need a different crank to run the larger big end like ARL rods.
Douglas
Douglas
Last edited:
fatmobile
Veteran Member
What engine do you get the different crank from?
jimbote
Certified Volkswagen Nut
PD150 ARL, BHW, maybe PD130. BHW is the only one sold in NA.
IndigoBlueWagon
TDIClub Enthusiast, Principal IDParts, Vendor , w/
Not sure what, if any, upgraded rods are still available for the ALH. Integrated no longer sells them,, and I don't think Rosten does either.
adamss24
Veteran Member
Maxspeeding rods are same design as rosten rods…they’ve ripped him off the design big time !
Mozambiquer
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adamss24
Veteran Member
I would keep the bottom end pd130/150 (ASZ/ARL), the crank and rods are the strongest in the 4 cyl engines and 400 bhp they can handle with ease !
If it’s not possible then maxspeeding rods and AWX/BEW/ASZ/ARL pistons will do fine. Some of our American counterparts have made Frankenstein engines
d block and VE head although some finish blokes on these forums have made 300 bhp with ease from stock bottom end. It’s how you drive it and how good your mapping is to keep torque manageable.
If it’s not possible then maxspeeding rods and AWX/BEW/ASZ/ARL pistons will do fine. Some of our American counterparts have made Frankenstein engines
d block and VE head although some finish blokes on these forums have made 300 bhp with ease from stock bottom end. It’s how you drive it and how good your mapping is to keep torque manageable.
jmodge
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https://mynorth.com/2014/11/oliver-racing-parts-outfits-the-worlds-fastest-race-cars/
Anyone not familiar with Tom Molnar, he was the face of this project from the beginning in the mid '80's. It seems from the moment that blank stock hit the cnc mill in the shop, Oliver's rods and main caps were a BIG hit with NASCAR. I was always impressed with how fast and famous that project grew, as well as Tom's humility and focus.
Molnar rods might be an unfamiliar name to many, but Tom is certainly no newcomer to this technology and design. If I were in the market for a set of rods that would hold up under extreme duress, I wouldn't hesitate to go with MOLNAR.
PakProtector
Veteran Member
For an ALH y'all have determined to need better rods, it depends on how much better. BEW are a step up and offer the tapered end. ARL/BHW give a substantially improved load capacity( the increased dia. ). Consult your tribology text to see just how much better; the shape of that curve escapes me at the moment. For sure it is not too big so as to have detrimentally high surface speed yet.
Douglas
Douglas