odd noise from the six
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Senior User
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odd noise from the six
my truck has an odd noise comming from under the (im not sure)valve cover or midway in the block,between the crankshaft and the head.
at idle speed if i listen close it has a slight sound a diesel would or more like a cheap japanese(toyota) engine noise, barely though, as i increase rpms, it turns more into a tick. i know its not lifters because thelifters are brand new, i can tell its not lifters, becasue the old ones ticked like hell.
anyone know what the deal is?
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
at idle speed if i listen close it has a slight sound a diesel would or more like a cheap japanese(toyota) engine noise, barely though, as i increase rpms, it turns more into a tick. i know its not lifters because thelifters are brand new, i can tell its not lifters, becasue the old ones ticked like hell.
anyone know what the deal is?
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
odd noise from the six
I'm not sure, but it may be your timing gears, my truck has 2 steel gears, and if I didn't know that it was the gears making noise, I'd swear the lifters were ticking badly, your truck has one fiber and one steel gear, so they won't make nearly as much noise.
Evan MacDonald
82 F100 FlareSide
HD 300-6
Hedman Hedder
NP435(6.69 low)
2.73 Geared 9"
31x10.50/15 Goodyear M/T's
Can you say Pre-Runner??
Evan MacDonald
82 F100 FlareSide
HD 300-6
Hedman Hedder
NP435(6.69 low)
2.73 Geared 9"
31x10.50/15 Goodyear M/T's
Can you say Pre-Runner??
Elder User
Joined: Sep 2000
Posts: 931
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From: Stanton, Suffolk England
odd noise from the six
Could it possiblly be an exhaust leak at the mainfold or pipe connection to the manifold. My truck had a donut leaking on the passenger side and I swore up and down it had a lifter ticking. When I replaced the donut the noise quit.
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
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odd noise from the six
its not the timming gears because ive replaced them, when i replaced the lifters i also rplaced the gears and cam and pushrods, the exhaust has a new doughnut gasket and intake/exhaust gasket, due to replacing a cracked manifold, thanks anyways guys, speaking of the noise ive noticed that since its been very cold here in n.c. this week, the noise is much louder with the colder weather until the engine warms up.
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
Thread Starter
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odd noise from the six
also, ive noticed my breather cap, sprays out quite a bit
of oil, at highway speeds, is this normal or not, if not, whats wrong?
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
of oil, at highway speeds, is this normal or not, if not, whats wrong?
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
Posting Guru
Joined: Apr 2000
Posts: 1,069
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odd noise from the six
sorry i did not finish replying in last post!
anyway, the blowby could indicate worn rings and cylinders, which could also produce piston slap which could be the sound you are hearing.
anyway, the blowby could indicate worn rings and cylinders, which could also produce piston slap which could be the sound you are hearing.
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odd noise from the six
well im working towards an overhaul anyway, today, i noticed water seeping through the head and block which indicated a blown head gasket, the head is off now, and will be sent to the machine shop, as for the rest of the motor i am gonna rebuild since i went this far. im glad im financially stable to do this, the truck is worth all the work in my opinion.
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
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Elder User
Joined: Sep 2000
Posts: 931
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From: Stanton, Suffolk England
odd noise from the six
I was financially stable once then I got married
check out clifford performance. They have all sorts of goodies for the 300. Good luck on the rebuild.
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
check out clifford performance. They have all sorts of goodies for the 300. Good luck on the rebuild.Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
odd noise from the six
Also check out http://www.jegs.com , they carry headers, Offenhauser 4bbl intakes and cams(Crane Powermax is listed in their catalog) for the 300, and are probably cheaper than Cliffords.
Evan MacDonald
82 F100 FlareSide
HD 300-6
Hedman Hedder
NP435(6.69 low)
2.73 Geared 9"
31x10.50/15 Goodyear M/T's
Can you say Pre-Runner??
Evan MacDonald
82 F100 FlareSide
HD 300-6
Hedman Hedder
NP435(6.69 low)
2.73 Geared 9"
31x10.50/15 Goodyear M/T's
Can you say Pre-Runner??
Elder User
Joined: Sep 2000
Posts: 931
Likes: 0
From: Stanton, Suffolk England
odd noise from the six
Grab that puppy up!! Down here 300 will not even buy you a junkyard 460. I like the 300 but there is no replacement for displacement
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
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odd noise from the six
im sorry i meant a 429, same block though, i can get the whole truck with motor and runs good for 600 bucks or the ,motor itself for $300, the truck is a 79 f250 little rust rough paint job but runs good, should i buy the truck and fix the 86 and sell it, or shall i chunk the 300 and drop the 429 in the 86?
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
John Floyd
South Mills,NC
'86 F150 2wd 300 6
Crane Cam 260/272
stock manifolds, w/ staight pipe
Elder User
Joined: Sep 2000
Posts: 931
Likes: 0
From: Stanton, Suffolk England
odd noise from the six
It may not be a bad Idea to grab the whole truck. To change from a 6 to a 429 you are going to need a new transmission anyway. Depending on the shape of the transmission in the 79 you may be money ahead. You might also want to use the rear end. most 79's had a 9" which in my humble opinion is a lot better rear end than the 8.8 if you don't need the parts I am sure you could sell them and part out the truck for more than the $300 difference.
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6
Brad Godkin
1986 F350 CC/SRW
6.9liter/C6