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Author Topic: 3.2 on manual gearbox,how its compared to 3.0?  (Read 3284 times)

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calibrated

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3.2 on manual gearbox,how its compared to 3.0?
« on: 09 April 2021, 20:25:12 »

Interested in how it is compared? I would like opinions from people who have driven,tested or raced so personal experience,bought 3.0 van with manual,acceleration is very good,3.7 diff ratio i think,so i am asking myself what would 3.2 do better?
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #1 on: 09 April 2021, 20:48:49 »

2 pedals good .... 3 pedals bad  ::) ::) ;)
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #2 on: 09 April 2021, 21:31:47 »

The 3.2 manual from the factory ( all police specials) has the r30 getrag box and the same diff as an auto so overall higher geared than a manual 3.0 with an r28. Also the 3.2 drive by wire throttle is a bit oversensitive v the old cable operated 3.0.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #3 on: 09 April 2021, 23:33:16 »

The 3.2 manual from the factory ( all police specials) has the r30 getrag box and the same diff as an auto so overall higher geared than a manual 3.0 with an r28. Also the 3.2 drive by wire throttle is a bit oversensitive v the old cable operated 3.0.
Not sure where you got any of that from ;D

All the manual 3.2s I have owned had factory 3.7:1 diffs. Never found the DBW throttle a problem either... And no SAI and EGR to delete either.

The R30 is a higher torque rated version of the R25/28 and is fundamentally interchangeable. I can't comment on the ratios in the R30, but the 3.2 has a higher top end than the 3.0...granted only a couple of mph, but more is better ;)
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deviator

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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #4 on: 12 April 2021, 10:11:48 »

The 3.2 also comes with more emissions stuff, so I don't think the difference is that much. Granted if you fitted the 3.2 with all the 3.0 accessories, it would be better. Although I suspect there will be other challenges.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #5 on: 12 April 2021, 13:26:17 »

The 3.2 also comes with more emissions stuff, so I don't think the difference is that much. Granted if you fitted the 3.2 with all the 3.0 accessories, it would be better. Although I suspect there will be other challenges.
Like what?

No EGR or SAI for a start ::) two extra cats, but they aren't exactly restrictive. No idle control valve either, that's set by the ecu which can make the idle on the 2.6/3.2 seem lumpy.

All in all that adds up to LESS emissions nonsense, not more ;)
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #6 on: 12 April 2021, 13:28:14 »

R30 is identical to R28 but has shot peened internals, AFAIK
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #7 on: 12 April 2021, 14:24:24 »

The 3.2 also comes with more emissions stuff, so I don't think the difference is that much. Granted if you fitted the 3.2 with all the 3.0 accessories, it would be better. Although I suspect there will be other challenges.
Like what?

No EGR or SAI for a start ::) two extra cats, but they aren't exactly restrictive. No idle control valve either, that's set by the ecu which can make the idle on the 2.6/3.2 seem lumpy.

All in all that adds up to LESS emissions nonsense, not more ;)

The ManiCATS have got to be a form of restriction or they wouldn't work as a Catalyst. There is also the COPs -v- coil pack, granted not much of an issue, but I seem to remember there was other differences in the engine, albeit minor.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #8 on: 13 April 2021, 02:06:35 »

Both the 2.6 and 3.2 produce more power and torque than the 2.5/3.0 respectively, so that logic doesn't hold any water ;)
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #9 on: 13 April 2021, 08:24:54 »

Both the 2.6 and 3.2 produce more power and torque than the 2.5/3.0 respectively, so that logic doesn't hold any water ;)
In which case I stand corrected. I thought the preference here was the 3.0?
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #10 on: 13 April 2021, 12:27:11 »

Both the 2.6 and 3.2 produce more power and torque than the 2.5/3.0 respectively, so that logic doesn't hold any water ;)
In which case I stand corrected. I thought the preference here was the 3.0?
God alone knows why ;D The 3.2 even has a forged crank.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #11 on: 13 April 2021, 13:30:39 »

The preference was always 3.2 block on 2.6/late 2.5 ported heads, 3.0 engine management setup, 2.6/3.2 exhaust manifolds, 2.5/3.0 front pipes/cats (with the tops trimmed to fit the later manifolds) plus 3.0 inlet setup.

The 2.6/3.2 suffers due to lower compression and a compromised engine management setup (far to emissions biased which impacted the economy), hence picking the best bits from all to restore the compression ratio and get best all round operation.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #12 on: 13 April 2021, 13:57:31 »

Both the 2.6 and 3.2 produce more power and torque than the 2.5/3.0 respectively, so that logic doesn't hold any water ;)
In which case I stand corrected. I thought the preference here was the 3.0?


I think that's down more to the connected feel and imo, throttle response  :-\
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #13 on: 14 April 2021, 08:07:06 »

The preference was always 3.2 block on 2.6/late 2.5 ported heads, 3.0 engine management setup, 2.6/3.2 exhaust manifolds, 2.5/3.0 front pipes/cats (with the tops trimmed to fit the later manifolds) plus 3.0 inlet setup.

The 2.6/3.2 suffers due to lower compression and a compromised engine management setup (far to emissions biased which impacted the economy), hence picking the best bits from all to restore the compression ratio and get best all round operation.

Thank you. I thought the 2.6/3.2 was hobbled by emissions.
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Re: 3.2 on manual gearbox,how its compared to 3.0?
« Reply #14 on: 14 April 2021, 10:42:33 »

Hobbled is hardly fair or accurate. The 3.2 modified as suggested is probably only a handful of BHP/Lbft up on the standard ones.

On road performance is more greatly affected by gearing... A 3.9 diff might get it of the line a couple of tenths faster but at the expense of top end speed/fuel economy/higher engine speed at motorway speeds.

Obviously depends what you are trying to achieve. A Z20LET or V8 conversion would both be productive performance upgrades.
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