What should I be revving to
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This area is dedicated to technical discussions concerning ZZW30's a.k.a. MRS / Spyder. Please try to spell correctly because this will help people find information later if they are using search functionality. If you need assistance with your car and want to host a spanner day, please use the appropriate section of the forum: http://mr2.org.nz/phpbb3/viewforum.php?f=35 Thank you.
- MIKEP
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What should I be revving to
Can one of you Spyder owners tell me what your revving at at 100 km in 5th
Seems a bit high to me.Any advice
Seems a bit high to me.Any advice
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Re: What should I be revving to
Would help if I knew the gearbox and tyre, wheel combo for the math. For the 5 speed it should be about 3K.
- *84vvt
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Re: What should I be revving to
6 speed is the same 3000 to 3200rpm @ 100Kmhmknz wrote:Would help if I knew the gearbox and tyre, wheel combo for the math. For the 5 speed it should be about 3K.
Boosted cars are like hot women.
A little edgy, every guy wants one,
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- psyguy
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Re: What should I be revving to
I'm on 225/45/16 and six-speed gearbox so not sure if that's any help but can let you know tomorrow when we meet Mike
- GDII
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Re: What should I be revving to
RPM vs indicated speed on the gauges is not affected by tyre size. Only everything from the speedo sensor, the diff and back to the clutch.
So you need to know your gear ratios and diff/final drive ratio and to ensure the speedo sensor is configured correctly. The sensor being wrong is most likely not a factor in most situations.
So you need to know your gear ratios and diff/final drive ratio and to ensure the speedo sensor is configured correctly. The sensor being wrong is most likely not a factor in most situations.
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- psyguy
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Re: What should I be revving to
I thought changing the overall tyre diameter affects the accuracy of the speedometer
- GDII
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Re: What should I be revving to
Yes that's true. But no matter the size of the tyre, the RPM at say 3000 will always read at 100kph on the gauges. Numbers are an example, not the answer to your question. Take the wheels off the car and run it on stands and the RPM will still read the same as the speed.psyguy wrote:I thought changing the overall tyre diameter affects the accuracy of the speedometer
If you are wanting to use GPS as your accurate speedo then the tyre size will affect what RPM you are at to acheive 100kph. Car speedos tend to read about 3kph lower than the actual speed on factory size tyres.
1990 SW20 MR2 G-Limited (GEN4 3SGTE Installed)
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1990 EP81 Starlet XL (Sold)
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- psyguy
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Re: What should I be revving to
So, the "real world" data (engine rpm vs vehicle's achieved kmph) does change with the tyre diameter but the calculated data (on the car's dashboard) stays the same regardless of the tyre diameter?
- MIKEP
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Re: What should I be revving to
Thanks guys was only a query.My AW sits at 2000 in 4th it's still on 14s.My SW on 205/45/16 but beams powered is about the same.
it was my first highway drive today with Dorothy and I noticed it was 3K . It's ok the book says 3k I was just checking .im not going to lose any sleep over it
it was my first highway drive today with Dorothy and I noticed it was 3K . It's ok the book says 3k I was just checking .im not going to lose any sleep over it
86 AW11 S/C,
81 Porsche 924S
02 VW Golf GTI
Minisprint powered by 4AGE 73D
99 ZZW30 Spyder
04 VW Passat V5
04 Mercedes ML270Cdi
90 SW20 N/A
2022 Club President
Auckland AC-Shows,Motorsport
81 Porsche 924S
02 VW Golf GTI
Minisprint powered by 4AGE 73D
99 ZZW30 Spyder
04 VW Passat V5
04 Mercedes ML270Cdi
90 SW20 N/A
2022 Club President
Auckland AC-Shows,Motorsport
- GDII
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Re: What should I be revving to
All good. I assume the AW and SW are auto? They rev much lower than the manuals at around 3K in 5th.MIKEP wrote:Thanks guys was only a query.My AW sits at 2000 in 4th it's still on 14s.My SW on 205/45/16 but beams powered is about the same.
it was my first highway drive today with Dorothy and I noticed it was 3K . It's ok the book says 3k I was just checking .im not going to lose any sleep over it
Yes that's correct.psyguy wrote:So, the "real world" data (engine rpm vs vehicle's achieved kmph) does change with the tyre diameter but the calculated data (on the car's dashboard) stays the same regardless of the tyre diameter?
1990 SW20 MR2 G-Limited (GEN4 3SGTE Installed)
2000 AE111R Corolla Wagon NZ New Daily
1996 AE101R Corolla Sprint NZ New Selling Soon
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
Instagram https://www.instagram.com/sw20glimited/
2000 AE111R Corolla Wagon NZ New Daily
1996 AE101R Corolla Sprint NZ New Selling Soon
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
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- *84vvt
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Re: What should I be revving to
GD11 has a point about the calculated speed
my speed is Rpm vers GPS as my speed o is a long way out
my speed is Rpm vers GPS as my speed o is a long way out
Boosted cars are like hot women.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.
- psyguy
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Re: What should I be revving to
3200 rpmMIKEP wrote:Can one of you Spyder owners tell me what your revving at at 100 km in 5th
- EssDub
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Re: What should I be revving to
3450 on a .815:1 6th and 4.51:1 diff, 205/50r15 tyre.
If you want it lower, get a C65 and have your 2900rpm @100k figure.
If you want it lower, get a C65 and have your 2900rpm @100k figure.
- psyguy
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Re: What should I be revving to
Mike, this is on a 6 speed, (and the 5th gear is different to a 5-speed), so please ignore!psyguy wrote:3200 rpmMIKEP wrote:Can one of you Spyder owners tell me what your revving at at 100 km in 5th
- EssDub
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Re: What should I be revving to
5th gear is the same on all C56/65M boxes in Spyders.