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BF Rev Limiter 

 

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 Post subject: BF Rev Limiter
Posted: Fri Dec 12, 2008 10:57 pm 
Stock as a Rock
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Age: 33

Posts: 102

Joined: 8th Nov 2004

Ride: BF XR6

Location: Adelaide
SA, Australia

Hi,

Just wondering how much damage is done to a car if the rev limiter is reached? I have a 6 speed manual BF XR6 and have on the odd occasion let it slip past the usable revs and hit the limiter. I have backed off straight away, but i am hoping that it is a safety measure to stop damage.

I am no sure how the system works or if I could potentially blow my Cat to pieces etc.

 

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Posted: Sat Dec 13, 2008 1:11 am 
Smokin em up
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Age: 34

Posts: 239

Joined: 20th Jan 2007

Ride: Custom Bedford, 79 Firebird

Location: Perth
WA, Australia

hey mate, the rev limiter is there to prevent you doing damage..
With the valve springs that are in the ba's you are likely to get valve bounce as you start climbing over 6000rpm
The rev limiter cuts spark (im pretty sure, maybe its fuel?) so it feels like its really harsh as the car all of a sudden loses power, but thats just the system doing its job.
It wont damage your cat if you were to over rev it, but you could potentially do alot more damage reving to 7000rpm with the stock setup, bending valves can cause a chain reaction of damage.

In short, you've got nothing to worry about

 

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Posted: Sat Dec 13, 2008 3:34 pm 
Getting Side Ways
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Age: 34

Posts: 10826

Joined: 17th Apr 2005

Gallery: 34 images

Ride: BF MK11 XR 6 TURBO ZF 6spd

Power: 225 rwkw

Location: glenwood/sydney
NSW, Australia

if you hit the limiter occasionally... when shifting.. should be allright... just dont stay on the limiter!.. :lol:

 

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Posted: Sat Dec 13, 2008 10:36 pm 
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Age: 36

Posts: 6275

Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

In the BA+ cars, the (first) rev limiter actually backs off - closes - the throttle (being electronically controlled).

If that should fail the hard cut kicks in which is a spark cut.

 

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1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
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Posted: Sun Dec 14, 2008 3:57 am 
Getting Side Ways
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Posts: 704

Joined: 19th May 2006

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Ride: 2003 BA XT

Power: 141 rwkw

Location: Perth
WA, Australia

The standard tune hard cuts it.

Should be fine.... oil pumps like to fail at 7krpm.. should be fine with 6k..

Mines taken a fair amount of punishment even at 6k and it still runs awesome, I have mine modded for high rpm power.
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Posted: Sat Dec 20, 2008 8:07 am 
Parts Gopher
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Posts: 69

Joined: 24th Aug 2008

Location: Sydney
NSW, Australia

Change gear, easy fix.

After peak power there is a sharp drop in output and your wasting time.

I have a BF T6 and shift by 5500. Stops making power so why not shift gears and make it pull again.

As for damage, could let a rod go, piston, valve ... wait and see.
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Posted: Sat Dec 20, 2008 11:24 am 
Stock as a Rock
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Age: 33

Posts: 102

Joined: 8th Nov 2004

Ride: BF XR6

Location: Adelaide
SA, Australia

I don't let it hit the limiter everytime i drive. I was really just asking if the couple of times it has hit the limiter would have done any damage. I agree about changing gears earlier as there is not much more puff left above 5500 rpm.

Thanks for all your advice guys its good to know that its not all that bad if i accidentally make a slip.

 

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BF XR6 - Silhouette, 6 Speed Manual, Leather Interior, Premium Sound, 18" BF XR Rims, Herrod Stainless Steel Exhaust & Headers, Typhoon CAI.

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Posted: Sat Dec 20, 2008 6:04 pm 
ACT Cruise Moderator
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Age: 36

Posts: 6275

Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

The rev limiters are set a LONG way below any point of damage. This is witnessed by how many people raise the rev limiters successfully and never have trouble.

 

_________________

1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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 Post subject: Re: BF Rev Limiter
Posted: Tue Jun 27, 2017 8:16 pm 
Fordmods Newbie
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Age: 21

Posts: 3

Joined: 27th Jun 2017

Ride: au xr6

Location: yarrawonga
VIC, Australia

no problem in the au xr6. i was hitting the limiter for a good 30 seconds, 2, 3 times a day for a couple months. had to sell the car due to unpaid fines.

https://www.youtube.com/watch?v=X9gzyOlJ9vw
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 Post subject: Re: BF Rev Limiter
Posted: Tue Jun 27, 2017 8:19 pm 
Fordmods Newbie
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Age: 21

Posts: 3

Joined: 27th Jun 2017

Ride: au xr6

Location: yarrawonga
VIC, Australia

the car loves staying on the limiter. when i had the au xr6 vct i was on the limiter for 30 seconds maybe 2 3 times a day for 2 months. i dont know about the ba-bf but.

https://www.youtube.com/watch?v=X9gzyOlJ9vw
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