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Running in New cam Advice
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Author:  NG [ Tue Apr 19, 2011 7:04 pm ]
Post subject:  Running in New cam Advice

heard a few different ways.

best one so far is rev it to about 2,000 or 2,500 for round 10 to 20mins or so up & down between that range.

i also bought some cam running in oil with a zinc additive .

should i use normal engine oil? the engine has done about 20,000km.

i was thinking best to run it in N/A before i bolt the blower on.

opinions?

Author:  simon k [ Tue Apr 19, 2011 7:26 pm ]
Post subject: 

what did GR say to do?

have you bought new followers as per his recommendation?

Author:  drmini in aust [ Tue Apr 19, 2011 7:30 pm ]
Post subject: 

Current thinking is stick it in, start motor & then go DRIVE it for 20 mins or so. Up a hill or two.
Revving it in neutral for 20mins with no load is just a recipe for glazed bores and then poor ring sealing. :wink:
When GR runs them in on his engine dyno, he puts part load on it for 15-20 mins. Hard to do this in yer garage....

Author:  NG [ Tue Apr 19, 2011 7:40 pm ]
Post subject: 

simon k wrote:
what did GR say to do?

have you bought new followers as per his recommendation?


yes isky ones.

Author:  NG [ Tue Apr 19, 2011 7:43 pm ]
Post subject: 

drmini in aust wrote:
Current thinking is stick it in, start motor & then go DRIVE it for 20 mins or so. Up a hill or two.
Revving it in neutral for 20mins with no load is just a recipe for glazed bores and then poor ring sealing. :wink:
When GR runs them in on his engine dyno, he puts part load on it for 15-20 mins. Hard to do this in yer garage....


my engine has done 20,000km so rings bed in a long time ago.

i could just put it in & go driving but what about fuel, my carby was set up for a 266 cam on the dyno.

do you really need load up the car? i assumed there is no load on the cam. just the drive train pistons etc.

Author:  drmini in aust [ Tue Apr 19, 2011 7:44 pm ]
Post subject: 

Jetting it has will be fine for the running in...
Rejet it later if you need to.

No if the rings etc are bedded in already, then 10-15 mins @2000rpm is fine.
I assumed the engine was a rebuild.

Author:  GT mowog [ Tue Apr 19, 2011 7:46 pm ]
Post subject:  Re: Running in New cam Advice

NG wrote:
heard a few different ways.

best one so far is rev it to about 2,000 or 2,500 for round 10 to 20mins or so up & down between that range.

i also bought some cam running in oil with a zinc additive .

should i use normal engine oil? the engine has done about 20,000km.

i was thinking best to run it in N/A before i bolt the blower on.

opinions?


Your Cam supplier should have given you this information. Seek their advice.

Author:  NG [ Tue Apr 19, 2011 7:58 pm ]
Post subject: 

do many of you use oil with a zinc additive??

Author:  drmini in aust [ Tue Apr 19, 2011 8:12 pm ]
Post subject: 

NG wrote:
do many of you use oil with a zinc additive??

I use SG oils (KMX 20W/50 and Castrol Edge Sport 25W/50).

SG and lower (SE, SF) oils still have ZDDP, it's the SH and later where they lowered or eliminated it.

Author:  NG [ Tue Apr 19, 2011 8:15 pm ]
Post subject: 

ok i always use Castrol Edge Sport 25W/50, i have a special cam zinc oil additive also to add to the oil when first running in the cam.

Author:  Phat Kat [ Tue Apr 19, 2011 8:23 pm ]
Post subject: 

Just a question nick (ok make that 2 ) .... which run in lube did you get... and did the lable say to pour it in the oil or to lather it on the lobes :?:

Author:  NG [ Tue Apr 19, 2011 8:32 pm ]
Post subject: 

moly for the cam.

the oil is a pour in type to be mixed with the engine oil when you run the cam in, only use the oil for 100km & then you need to drop the oil & filter & put fresh oil in.

edit let me find the bottle.

Author:  Phat Kat [ Tue Apr 19, 2011 9:12 pm ]
Post subject: 

Moly Grease or molybond?

Author:  NG [ Tue Apr 19, 2011 9:20 pm ]
Post subject: 

Not sure my mechanic is doing the cam.

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