Is the timing ran by a belt or a chain? (1999-2004 Mustang V6) - Ford Mustang Forum
 
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post #1 of 12 (permalink) Old 10-31-2009 Thread Starter
 
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Is the timing ran by a belt or a chain? (1999-2004 Mustang V6)

Does the 3.8 liter V6 engine (1999-2004) have a timing chain or a timing belt?

I have had half of people online tell me that the timing is ran by a belt while the other half say the timing is ran by a chain, so some people are lying, lol. Which one is it?!! (I hope it is a chain!!! )

Thanks for your help!


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post #2 of 12 (permalink) Old 10-31-2009
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yeah its run by a chain.. belts slip.. slipped belt means off-timing. which would be a pain in the butt


2003 3.8L V6 4R70W
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Best 1/4 time: 15.036 @90.92mph, 2.148 60'
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post #3 of 12 (permalink) Old 10-31-2009
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chain is what i got when i google'd it but like u got both alot on the non overhead its chain are the 99-04 over head cams??

cams, and all basic bolt ons, arizen seats, cowl hood, and now my buckets got a hole in it (meaning im broke) but when i fix it ill have gears and some trany work
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post #4 of 12 (permalink) Old 10-31-2009
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94-04 3.8 v6's as well as all previous 5.0L's are all overhead valve engines.. single camshaft above the crankshaft in the center of the engine.

2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'
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post #5 of 12 (permalink) Old 10-31-2009
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Quote:
Originally Posted by Markstang690 View Post
94-04 3.8 v6's as well as all previous 5.0L's are all overhead valve engines.. single camshaft above the crankshaft in the center of the engine.
5.0's are over head?? thought they were single learn somethin new everyday

cams, and all basic bolt ons, arizen seats, cowl hood, and now my buckets got a hole in it (meaning im broke) but when i fix it ill have gears and some trany work
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post #6 of 12 (permalink) Old 10-31-2009
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yup in my haynes manual they have the 5.0 and the 3.8 grouped together for pretty much everything because theyre basically the same engine minus 2 cylinders.. theyre actually not developmentally related but ended up being very similar its pretty interesting

2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'
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post #7 of 12 (permalink) Old 10-31-2009
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Quote:
Originally Posted by gostriderblack View Post
5.0's are over head?? thought they were single learn somethin new everyday
actually no u read that wrong.. or are saying it wrong.. idk which.. both 5.0's and 3.8's have one cam which operates pushrods to operate the valves on the heads.. later 4.0 v6's are overhead cams(2 cams total) the cam directly opens the valves

2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'
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post #8 of 12 (permalink) Old 10-31-2009
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Quote:
Originally Posted by Markstang690 View Post
actually no u read that wrong.. or are saying it wrong.. idk which.. both 5.0's and 3.8's have one cam which operates pushrods to operate the valves on the heads.. later 4.0 v6's are overhead cams(2 cams total) the cam directly opens the valves
ok ya i read it wrong i thought u said they were ohc but u said over head valves. ya i actually kinda miss the single cam and push rod set up but i like not haven to set the valve lash on the rockers

cams, and all basic bolt ons, arizen seats, cowl hood, and now my buckets got a hole in it (meaning im broke) but when i fix it ill have gears and some trany work
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post #9 of 12 (permalink) Old 11-01-2009
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Quote:
Originally Posted by Markstang690 View Post
yeah its run by a chain.. belts slip.. slipped belt means off-timing. which would be a pain in the butt
timing belts don't look like drive belts.

drive belts are serpentine style, and and timing belts are cog style. engines with timing belts have cog pulleys (pulleys with teeth, resembling gears) on the camshaft(s), and they wont slip unless the belt is extremely loose.

and yes the 3.8 and 5.0 are very similar...they are both windsor engines.

-2000 3.8L TKO600, 1.8 60ft, 8.71 @ 81mph
-1988 Jeep XJ, bone stock 2wd
-1994 Jeep XJ 4wd, 3" lift, 31" tires.. rust in peace..
-1997 Jeep XJ 4wd, 7" lift, 35" tires, front/rear lockers

-Bronze Level Porsche Technician
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Quote:
Originally Posted by 232-K7 View Post
timing belts don't look like drive belts.

drive belts are serpentine style, and and timing belts are cog style. engines with timing belts have cog pulleys (pulleys with teeth, resembling gears) on the camshaft(s), and they wont slip unless the belt is extremely loose.

and yes the 3.8 and 5.0 are very similar...they are both windsor engines.
actually belt driven is the best topfuel uses it almost all dragsters do jessel check um out it bedder than gear or chain drive.

cams, and all basic bolt ons, arizen seats, cowl hood, and now my buckets got a hole in it (meaning im broke) but when i fix it ill have gears and some trany work
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Quote:
Originally Posted by gostriderblack View Post
actually belt driven is the best topfuel uses it almost all dragsters do jessel check um out it bedder than gear or chain drive.

jesel belt drive, is exactly what i just mentioned above. it is a belt that runs on cog gears. virtually every engine that has a timing belt is like that.

if your timing belt was not run on cog gears, but just simple pulleys, could you imagine the damage it would cause if your engine was running and the belt slipped even just a little? it would be the equivalent of your timing belt breaking with the engine running.

-2000 3.8L TKO600, 1.8 60ft, 8.71 @ 81mph
-1988 Jeep XJ, bone stock 2wd
-1994 Jeep XJ 4wd, 3" lift, 31" tires.. rust in peace..
-1997 Jeep XJ 4wd, 7" lift, 35" tires, front/rear lockers

-Bronze Level Porsche Technician
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post #12 of 12 (permalink) Old 11-03-2009 Thread Starter
 
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Thanks

Thank you for the responses!:happydancer:
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