Advantages of H-Beam rods over stock in a 2.0L |
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Advantages of H-Beam rods over stock in a 2.0L |
lonewolfe |
Feb 20 2015, 02:46 PM
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#1
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Senior Member Group: Members Posts: 819 Joined: 12-September 11 From: Oakland, CA Member No.: 13,549 Region Association: Northern California |
What are the advantages of H-Beam rods over stock rods in a 2.0L motor? I know the H-Beams are lighter and stronger but in terms of performance what are the advantages of using the lighter rods?
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Woody |
Feb 27 2015, 04:14 PM
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#2
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Sandbox Rabblerouser and head toilet scrubber Group: Members Posts: 3,858 Joined: 28-December 10 From: San Antonio Texas Member No.: 12,530 Region Association: Southwest Region |
The rods are 5.325. Cam is an 86b/86c on 105 degree lobe centers with a reduced base circle. Pistons are 98mm JEs with raised pins and biral cylinders.
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lonewolfe |
Feb 27 2015, 04:33 PM
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#3
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Senior Member Group: Members Posts: 819 Joined: 12-September 11 From: Oakland, CA Member No.: 13,549 Region Association: Northern California |
The rods are 5.325. Cam is an 86b/86c on 105 degree lobe centers with a reduced base circle. Pistons are 98mm JEs with raised pins and biral cylinders. I've seen those Biral cylinders on a couple of sites. Do you have any experience with them? I've not seen anyone that has used them on a 914. In theory that sound like a great option to me but some folks have said they don't stay round because the iron sleeves are too thin. Not that they've actually used them. I believe they came from the factory on some 356's and early 911's. I doubt Porsche would have used them if they were problematic and probably switched to iron to cut cost. |
Mark Henry |
Feb 27 2015, 04:39 PM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
The rods are 5.325. Cam is an 86b/86c on 105 degree lobe centers with a reduced base circle. Pistons are 98mm JEs with raised pins and biral cylinders. I've seen those Biral cylinders on a couple of sites. Do you have any experience with them? I've not seen anyone that has used them on a 914. In theory that sound like a great option to me buy some folks have said they don't stay round because the iron sleeves are too thin. Not that they've actually used them. I believe they came from the factory on some 356's and early 911's. I doubt Porsche would have used them if they were problematic and probably switched to iron to cut cost. They switched to nikasil and alusil, in the 911 the birail cylinder was a transition part as the HP increased. I think staying round isn't the issue as much as separation of the two materials. |
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