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| Romac Harmonic Balancer https://ausmini.com/forums/viewtopic.php?f=2&t=101999 |
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| Author: | Darkale50 [ Thu Aug 31, 2023 11:22 am ] |
| Post subject: | Romac Harmonic Balancer |
Hi All I'm installing a new Romac Harmonic Balancer to a 1969 Cooper S. Unlike the original balancer which has a lock washer to lock the crankshaft bolt to the balancer the new Romac unit does not. Question: Is there a method of locking the crankshaft bolt to the balancer ? Cheers |
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| Author: | 68+86auto [ Thu Aug 31, 2023 11:54 am ] |
| Post subject: | Re: Romac Harmonic Balancer |
Thread locker aka Loctite |
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| Author: | drmini in aust [ Fri Sep 01, 2023 7:41 am ] |
| Post subject: | Re: Romac Harmonic Balancer |
Loctite 262 or 263. |
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| Author: | Darkale50 [ Sat Sep 02, 2023 8:21 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
Thanks for the replies. Does anyone have experience installing the Romac Harmonic Balancer. As I have found out that it does not slide nicely onto the crank like the original but is an interference fit. |
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| Author: | drmini in aust [ Sun Sep 03, 2023 8:55 am ] |
| Post subject: | Re: Romac Harmonic Balancer |
Check for burrs on the keyway. Check also the key width if new. Some new keys from God knows where are a few thou too thick. Balancer should slide on, neat but not interference fit. I recently fitted 2 to new cranks. |
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| Author: | Darkale50 [ Sun Sep 03, 2023 4:35 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
Thanks for the info DrMini, did you fit Romac Balancers to the new cranks ? |
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| Author: | drmini in aust [ Mon Sep 04, 2023 7:10 am ] |
| Post subject: | Re: Romac Harmonic Balancer |
Yes. Before fitting a new key check it slides through the balancer. Rub on 180 paper on a machined surface untit does. Also try fit the balancer with no key, deburr the crank with 180 paper until it does. Often there's a burr on the crank keyway. |
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| Author: | ausdino [ Mon Sep 04, 2023 7:43 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
What are the advantages over the standard Cooper S balancer (besides age) and would/should you get it balanced when getting crank/flywheel/rotating assemblies balanced ? |
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| Author: | drmini in aust [ Mon Sep 04, 2023 8:38 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
You can buy them. Balanced by factory. I don't believe they need balancing when fitted. I've balanced cranks then + flywheel then + backplate then + diaphragm. Can't do harmonic balancer during this as crank nose is driven by the dynamic balancer. Edited for clarity. |
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| Author: | Darkale50 [ Mon Sep 04, 2023 8:48 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
Thanks for the heads up. Cheers |
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| Author: | ausdino [ Mon Sep 04, 2023 11:14 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
drmini in aust wrote: You can buy them. Balanced by factory. I don't believe they need balancing when fitted. I've balanced cranks then + flywheel then + backplate then + diaphragm. Can't do harmonic balancer during this as crank nose is driven by the dynamic balancer. Edited for clarity. Thanks Dr. |
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| Author: | awdmoke [ Wed Sep 13, 2023 12:03 pm ] |
| Post subject: | Re: Romac Harmonic Balancer |
Darkale50 wrote: Thanks for the replies. Does anyone have experience installing the Romac Harmonic Balancer. As I have found out that it does not slide nicely onto the crank like the original but is an interference fit. I did find fitting it to my engine in-situ it was too tight. There were some marks on the crank nose of my very much used crank, so I had to spend quite some time with emery cloth linishing just the very end to get of the crank to get the new balancer on. |
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