Engine knocking around 1.8 revs - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Ultramaroon · 10-27-2021, 01:26 AM

Quote:

Originally Posted by NoHaveMSG

He would have no oil pressure if that was the case. Rods would start making noise. In neutral my car made it all of less then 100 yards before throwing a rod when it lost a rocker.

Still waiting on results from first morning cold start.

SammyXNA · 10-27-2021, 03:54 AM

Car starts up fine during cold start nothing knocks no noise, car idles fine. Bear in mind that it's running a stage 2+ oft tune with that cold start delete though..

Ultramaroon · 10-27-2021, 02:24 PM

Quote:

Originally Posted by SammyXNA

Car starts up fine during cold start nothing knocks no noise, car idles fine. Bear in mind that it's running a stage 2+ oft tune with that cold start delete though..

Rules out rod knock. In any case, extremely unhealthy to continue running it. Pull engine, remove valve covers to inspect there first. My $0.02.

Rabrooks · 11-06-2021, 01:49 PM

it could be a bad cam gear. They are known to go bad and sound like a rod knock. Also, check for an ejected rocker. Sometimes this causes an oil leak because it will crack the valve cover.

blsfrs · 11-07-2021, 09:49 AM

Quote:

Originally Posted by NoHaveMSG

He would have no oil pressure if that was the case. Rods would start making noise. In neutral my car made it all of less then 100 yards before throwing a rod when it lost a rocker.

Mine didn't lose oil pressure. The pivots were still in place when I pulled the valve cover.

NoHaveMSG · 11-07-2021, 09:30 PM

Quote:

Originally Posted by blsfrs

Mine didn't lose oil pressure. The pivots were still in place when I pulled the valve cover.

Interesting. Did yours pop at low rpm? My pivots where mangled and the bores messed up when they got whacked by the cam lobe on the way out.

blsfrs · 11-08-2021, 08:52 AM

Quote:

Originally Posted by NoHaveMSG

Interesting. Did yours pop at low rpm? My pivots where mangled and the bores messed up when they got whacked by the cam lobe on the way out.

I think it was low speed after something got sucked into #3. First I was low on power. Pulled into paddock, checked things over, it began missing and clacking on restart. Left it at the track and when I went to get it, things went from bad to worse with broken timing chain. I had normal oil pressure the whole time. Was the hole in your valve cover big enough to dump out a bunch of oil in a short time?

NoHaveMSG · 11-08-2021, 10:16 AM

Quote:

Originally Posted by blsfrs

I think it was low speed after something got sucked into #3. First I was low on power. Pulled into paddock, checked things over, it began missing and clacking on restart. Left it at the track and when I went to get it, things went from bad to worse with broken timing chain. I had normal oil pressure the whole time. Was the hole in your valve cover big enough to dump out a bunch of oil in a short time?

No. I had a crack and very little oil actually came out.

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10-27-2021, 03:54 AM	#16
SammyXNA Junior Member Join Date: May 2021 Drives: 2013 Location: GB Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Car starts up fine during cold start nothing knocks no noise, car idles fine. Bear in mind that it's running a stage 2+ oft tune with that cold start delete though..

11-06-2021, 01:49 PM	#18
Rabrooks Senior Member Join Date: Oct 2019 Drives: 2020 Subaru BRZ Location: Washington NC Posts: 110 Thanks: 7 Thanked 23 Times in 18 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	it could be a bad cam gear. They are known to go bad and sound like a rod knock. Also, check for an ejected rocker. Sometimes this causes an oil leak because it will crack the valve cover.

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