New Type IV flywheel options, AA Products unit okay? |
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New Type IV flywheel options, AA Products unit okay? |
Mueller |
Nov 1 2017, 04:03 PM
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#1
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
After the 15% discount which I should qualify for, it would be about $150 before shipping and taxes.
I'm pretty sure my current flywheel cannot be turned down anymore. |
branston |
Nov 1 2017, 04:25 PM
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#2
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Member Group: Members Posts: 89 Joined: 17-October 12 From: Michigan Member No.: 15,053 Region Association: Upper MidWest |
After the 15% discount which I should qualify for, it would be about $150 before shipping and taxes. I'm pretty sure my current flywheel cannot be turned down anymore. I bought more than a year ago, installed on my 1.8. its just fine, happy with quality no problem fitting. Car is used most weeks and recntly did 425 trip with no issues. And for the money it's a deal |
Mueller |
Nov 1 2017, 04:35 PM
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#3
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
After the 15% discount which I should qualify for, it would be about $150 before shipping and taxes. I'm pretty sure my current flywheel cannot be turned down anymore. I bought more than a year ago, installed on my 1.8. its just fine, happy with quality no problem fitting. Car is used most weeks and recntly did 425 trip with no issues. And for the money it's a deal Thanks! |
mgphoto |
Nov 2 2017, 10:11 AM
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#4
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"If there is a mistake it will find me" Group: Members Posts: 1,364 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
Keep in mind the there are cheap type IV flywheels which are cast, the 914 requires a forged flywheel.
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Mikey914 |
Nov 2 2017, 10:33 AM
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#5
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The rubber man Group: Members Posts: 12,729 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Forging is a much more expensive process. I can understand why factory would use it from a product liability standpoint (also may use same forging for higher HP applications?).
Depending on the alloy and impurities in the metal I could see how a cast part could become a grenade if quality was poor. However, if a hardening process was used on a high quality casting, at least for a low HP application it may be appropriate? Because if it's aftermarket, I'd bet it's not forged due to the cost (and what you paid). What are your thoughts? |
jd74914 |
Nov 2 2017, 10:44 AM
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#6
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Its alive Group: Members Posts: 4,810 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
AA claims their flywheels are forged. I wouldn't be shocked if that was true; they likely could use the same forging for all of their VW flywheels and just do some additional machining; that's likely much cheaper than multiple forging dies.
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jd74914 |
Nov 2 2017, 10:48 AM
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#7
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Its alive Group: Members Posts: 4,810 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Forging is a much more expensive process. I can understand why factory would use it from a product liability standpoint (also may use same forging for higher HP applications?). Depending on the alloy and impurities in the metal I could see how a cast part could become a grenade if quality was poor. However, if a hardening process was used on a high quality casting, at least for a low HP application it may be appropriate? Because if it's aftermarket, I'd bet it's not forged due to the cost (and what you paid). What are your thoughts? Does anyone sell a cast flywheel? I would think the forging process would be less expensive than x-raying each flywheel. The liability seems too great for even an aftermarket vendor to not either do serious QC or forge. It's not like you're going to stop a broken flywheel from coming through the bellhousing. Kind of like a disc in a turbine engine, but not quite as dangerous due to the 10x reduction in rotation speed. |
Mueller |
Nov 2 2017, 10:58 AM
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#8
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
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jd74914 |
Nov 2 2017, 11:01 AM
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#9
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Its alive Group: Members Posts: 4,810 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Yeah, really. A 914 is about as low personal risk as you can get. (IMG:style_emoticons/default/laugh.gif)
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914_teener |
Nov 2 2017, 03:14 PM
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#10
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914 Guru Group: Members Posts: 5,247 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Forging is a much more expensive process. I can understand why factory would use it from a product liability standpoint (also may use same forging for higher HP applications?). Depending on the alloy and impurities in the metal I could see how a cast part could become a grenade if quality was poor. However, if a hardening process was used on a high quality casting, at least for a low HP application it may be appropriate? Because if it's aftermarket, I'd bet it's not forged due to the cost (and what you paid). What are your thoughts? My thoughts are this: High quality castings....centrifrical or other methods are very expensive nowdays and a tyoe iv flywheel...in my mind wouldn.t be justified They used investment castings in the old days prior to the advent of larger billet steel sizes and cnc equipment. I highly doubt that the part is cast....it is either machined billet steel or forged. Most likely forged. |
914_teener |
Nov 2 2017, 03:30 PM
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#11
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914 Guru Group: Members Posts: 5,247 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Not saying it can't be. I just don't think the numbers and the part for what it is and does would justify it.
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DM_2000 |
Nov 2 2017, 06:21 PM
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#12
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Member Group: Members Posts: 217 Joined: 16-August 17 From: PA Member No.: 21,351 Region Association: None |
I wouldn't expect the flywheel to be "finish" forged to shape like a crankshaft or connecting rod.
I would expect it to be a disc of steel turned into a dinner plate then finish machined. If this is what is occurring, the dies would be very simple and probably used for other parts automotive or not. |
Mueller |
Nov 2 2017, 08:05 PM
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#13
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
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Krieger |
Nov 2 2017, 09:13 PM
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#14
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Advanced Member Group: Members Posts: 4,759 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None |
[quote name='Mueller' date='Nov 2 2017, 07:05 PM' post='2544923']
I found a video of them making their flywheels: https://www.youtube.com/watch?v=_0bbTZrcYMc [/quote Wow! That is some serious teamwork involved. Good thing it wasn't a rainy day, but maybe that would have kept the dust down. |
Mikey914 |
Nov 2 2017, 11:39 PM
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#15
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The rubber man Group: Members Posts: 12,729 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Technically this is forging. But think about this. You start with a pure steel alloy (best case). Did you notice that the amount of material used was lets just say 1/8 of the ingot. So the 1st one you do is pure. After you roll it around in the soil, you now throw it back into the forge to make the next ingot. So how much of god knows what is introduced into the metal?
I'm sure all the impurities burned off. (IMG:style_emoticons/default/biggrin.gif) |
jd74914 |
Nov 2 2017, 11:58 PM
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#16
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Its alive Group: Members Posts: 4,810 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
So the 1st one you do is pure. After you roll it around in the soil, you now throw it back into the forge to make the next ingot. So how much of god knows what is introduced into the metal? That's called alloying. It even has propriety and local-specific dopants. Probably why some import metals work so nicely. (IMG:style_emoticons/default/laugh.gif) |
maf914 |
Nov 3 2017, 09:19 AM
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#17
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
Wow! Good video.
Is that how Fuchs made their famous wheels for Porsche? |
type2man |
Nov 3 2017, 11:00 AM
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#18
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Member Group: Members Posts: 355 Joined: 3-March 09 From: Miami, Fl Member No.: 10,127 Region Association: South East States |
If your old flywheel didnt chatter or have any blue spots or didn't slip under load, just reinstall it. It's going to be better than anything aftermarket that youll install
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914_teener |
Nov 3 2017, 11:04 AM
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#19
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914 Guru Group: Members Posts: 5,247 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
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Mark Henry |
Nov 3 2017, 11:17 AM
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#20
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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 |
Pelican had German flywheels, they were good quality.
Last one I used had no balance drilling, I took it to the balance shop and they said it was right on the money. |
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