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  #1  
Old 12-20-2010, 03:41 PM
pooleo pooleo is offline
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Default 2.3/2.5 rpm....?

Any of you 4 banger guys tell me what the rpms should be around for a 2.3/2.5 at 70mph in 5th gear manual....?

I just put my tach cluster in my dads ranger. he says its running at 19oo rpm at 70. He has also changed his tires went from a 205 to a 235.

I told him he should swap out his gearing to 4.10. I just want to get an idea of what stock rpm should be from you guys. Thanks.
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Old 12-20-2010, 07:50 PM
hotshower10 hotshower10 is offline
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Default Re: 2.3/2.5 rpm....?

i have the 2.5 with 235's. at 70 im probably doing 2300 to 2500 rpms, im not exactly sure though but its in that ballpark
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Old 12-20-2010, 07:58 PM
terryduanemiller terryduanemiller is offline
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Default Re: 2.3/2.5 rpm....?

'99 Mazda SE 2.5L ..wheels n tire combo I have now are same height as stock 235/70/15 I turn round 2500-2800 70-75mph
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Old 12-20-2010, 08:00 PM
pooleo pooleo is offline
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Default Re: 2.3/2.5 rpm....?

thanks guys at least we have some sort of reference. Hes running 235's with 3.73 ratio.
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A Gladiator does not fear death. He embraces it. Caresses it. Fucks it. Each time he enters the arena, he slips his c0ck in the mouth of the beast, and prays to thrust home before the jaws snap shut. - Oenomaus
Ball Joints/Upper A-Arms How To
Replace Door pin/bushing
Repair broken dome light tabs
VIDEO OHC Install
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  #5  
Old 12-20-2010, 08:28 PM
mikesturbo94 mikesturbo94 is offline
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Default Re: 2.3/2.5 rpm....?

I'm at 2800 at 70 with with 373 gears and 275/40/17s
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  #6  
Old 12-20-2010, 09:37 PM
jfive jfive is offline
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Default Re: 2.3/2.5 rpm....?

205/70R14 at 70 was like 2500 or 2700rpm with 373s or 355s. I could hook it back up to confirm though. This is on a 92 2.3 ranger 5 speed. M50D has a pretty big od IMO.
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Old 12-21-2010, 07:04 AM
scheider1980 scheider1980 is offline
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Default Re: 2.3/2.5 rpm....?

I have a 99 I have 235/50/18 and rpm at 1900
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  #8  
Old 12-27-2010, 11:29 PM
red_rider red_rider is offline
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Default Re: 2.3/2.5 rpm....?

I'm at about 2900 rpm at 65 mph on my 97 2.3, with factory 4.10's and 225 70R14 tires (about 26.4 inch diameter for comparisons sake).
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