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Author Topic: how to get most power out of 2.5v6  (Read 3538 times)

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husky12

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how to get most power out of 2.5v6
« on: 08 January 2014, 03:04:20 »

any one any i deas on how i could get the most power out of my 2.5v6 omega getting the brain remapped and maby 3.0 cams but any other ways? all ideas welcome 
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Dan282

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Re: how to get most power out of 2.5v6
« Reply #1 on: 08 January 2014, 06:42:28 »

Cams and a chipped ecu are a good start. Weight reduced, limited slip diff, exhaust maybe?
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kcl

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Re: how to get most power out of 2.5v6
« Reply #2 on: 08 January 2014, 07:11:27 »

How much easier it would be to put 3,0 engine in, achieve same results and save a lot of money... With 3,0 cams and chipped ecu you will not get even near to +10% power. I'd say +10 horsepower max. 3,0 engine has got more.
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Marks DTM Calib

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Re: how to get most power out of 2.5v6
« Reply #3 on: 08 January 2014, 08:27:24 »

3.0 cams plus inlet divider will see circa 18-20 bhp gains (3.0 cams have higher lift), if going further then 3.2/2.6 manifolds are much improved over the cast items on 2.5/3.0
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kcl

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Re: how to get most power out of 2.5v6
« Reply #4 on: 08 January 2014, 08:45:39 »

3.0 cams plus inlet divider will see circa 18-20 bhp gains (3.0 cams have higher lift), if going further then 3.2/2.6 manifolds are much improved over the cast items on 2.5/3.0

Yes, but putting a whole 3,0 lump in will give the same/even better result and seems that these engines are available for less than 100 pounds so I'd be tempted to change the whole lot.. and then, if needed, putting the chipped ecu to that setup. And still the car will never ever be significantly quicker, nor it will become a sports car.
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Marks DTM Calib

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Re: how to get most power out of 2.5v6
« Reply #5 on: 08 January 2014, 09:16:17 »

A 3.0 transplant is an alernative (Although the query was how to get more go out of a 2.5), going 3.0 then the better manifolds are also an option
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chrisgixer

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Re: how to get most power out of 2.5v6
« Reply #6 on: 08 January 2014, 09:41:11 »

3.0 cams plus inlet divider will see circa 18-20 bhp gains (3.0 cams have higher lift), if going further then 3.2/2.6 manifolds are much improved over the cast items on 2.5/3.0

Superior, see. ;) ;D

Are 3.2 cams no use btw ? Just wondered, in case they come up before 3.0 cams, for the op.
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Marks DTM Calib

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Re: how to get most power out of 2.5v6
« Reply #7 on: 08 January 2014, 10:20:09 »

Unproven would be a better phrase, given the 2.6/3.2 have poorer eonomy than th 2.5/3.0 then I would be going for the earlier setup (plus there should be more about of the 3.0 ones)
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AndyStobbs

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Re: how to get most power out of 2.5v6
« Reply #8 on: 08 January 2014, 10:38:16 »

J shafts seem to be half way between A and G from what I quickly observed on mine.

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Marks DTM Calib

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Re: how to get most power out of 2.5v6
« Reply #9 on: 08 January 2014, 10:57:19 »

Interesting as I have never had an opportunity to measure the lift or duration on a set of J's.
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tigers_gonads

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Re: how to get most power out of 2.5v6
« Reply #10 on: 08 January 2014, 12:34:03 »

Out of interest, has anybody dropped a set of G cams off a 3ltr in a 3.2 ?
Replacing either inlet, exhaust or maybe both ?

I just happen to have a set off my 3lt cams sat here and the cam covers / timing belt just happen to be on the agenda  this year  :)
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AndyStobbs

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Re: how to get most power out of 2.5v6
« Reply #11 on: 08 January 2014, 12:49:55 »

Out of interest, has anybody dropped a set of G cams off a 3ltr in a 3.2 ?
Replacing either inlet, exhaust or maybe both ?

I just happen to have a set off my 3lt cams sat here and the cam covers / timing belt just happen to be on the agenda  this year  :)

About to do just that. Haven't fired it up yet but that's the spec I'm building my 3.2 to. Removed the J pair and replaced with G. Giving 4xG
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Marks DTM Calib

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Re: how to get most power out of 2.5v6
« Reply #12 on: 08 January 2014, 13:12:21 »

It would be interesting to see a late set of slightly ported 2.5 or 2.6 heads fitted to a 3.2 as well (in order to restore the compresison ratio dropped when the 3.2/2.6 lost the EGR)
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husky12

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Re: how to get most power out of 2.5v6
« Reply #13 on: 08 January 2014, 13:50:54 »

3.0 heart is next plan of action wen this engine blows, wat wud all need to be changed? and 3.0 engines arnt that easy come buy in northern ireland and arnt that cheap, unless any one knows of one?/ also in the post i put 2.5 i keep for getting the engine is 2.6 block, head nd cams running 2.5 gear.
thanks for all help
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tigers_gonads

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Re: how to get most power out of 2.5v6
« Reply #14 on: 08 January 2014, 14:17:44 »

It would be interesting to see a late set of slightly ported 2.5 or 2.6 heads fitted to a 3.2 as well (in order to restore the compresison ratio dropped when the 3.2/2.6 lost the EGR)


What was Daz doing to that engine he has  :-\
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