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Author Topic: 2.6 , which cams are better for low end?  (Read 874 times)

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gazzap

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2.6 , which cams are better for low end?
« on: 03 January 2019, 13:59:53 »

Afternoon, does anyone know cam set up in a 2.6 is better for low end performance increase? I currently have a 2.6 with the original cams in, ( not sure what they are though)
Read up alot of stipulation on what cams to put in, G+A  or G+G, i have 4xG cams already, although im slightly concerned as 2 of the g cams where from my 3.2 and the other 2 i purchased i have no idea what engine they came from. Would the best setup for low end be G+A cams? And does the 2.6 already have A cams in? Cheers!
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VXL V6

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Re: 2.6 , which cams are better for low end?
« Reply #1 on: 03 January 2019, 14:42:47 »

Had G cams in my old 2.6, didn't notice much difference to standard to be honest and nowhere near the performance of a standard 3.2 even though the fuel consumption is similar.
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Kevin Wood

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Re: 2.6 , which cams are better for low end?
« Reply #2 on: 03 January 2019, 16:48:26 »

In my very limited experience of helping out with a few 2.5 / 2.6 cam swaps you will lose low end torque for perhaps a little more go at higher revs.

For more torque you need more cubes. Nothing else will do it and more cam lift and intake breadth above factory gives you less intake swirl at low revs so less performance.
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TheBoy

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Re: 2.6 , which cams are better for low end?
« Reply #3 on: 03 January 2019, 17:52:48 »

The 2 posts immediately above match my experiences.
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Re: 2.6 , which cams are better for low end?
« Reply #4 on: 03 January 2019, 18:11:33 »

Imo, the best option would be to pick up a 3.2 engine for a couple of hundred quid, and drop it in.
Serek might still have a few in a lock up of Noofland.
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gazzap

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Re: 2.6 , which cams are better for low end?
« Reply #5 on: 03 January 2019, 18:24:39 »

Cheers guys for the replys with this, it was only a thought as have seen it discussed in many forums but noone could stipulate if it was worth it or not, i do currently have a 3.2 im rebuilding but looking at insurance quotes for an engine swap just wouldn't be worth it, so may come to sell it, just trying to squeeze as much power of the little 2.6 as i can  :)
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Doctor Gollum

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Re: 2.6 , which cams are better for low end?
« Reply #6 on: 03 January 2019, 19:18:01 »

Fill it with V Power and make sure the timing is absolutely spot on. Fresh plugs and air filter will probably help too.
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gazzap

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Re: 2.6 , which cams are better for low end?
« Reply #7 on: 03 January 2019, 19:26:24 »

Fill it with V Power and make sure the timing is absolutely spot on. Fresh plugs and air filter will probably help too.

Yeah she gets run on v power 24/7 , timing should be fine, got a few plans for her this year, building a new induction system for her to replace the dual ram, she's losing a lot of weight, going to get heads ported and polished, lightened flywheel, remap, few other things and then supercharged
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Re: 2.6 , which cams are better for low end?
« Reply #8 on: 03 January 2019, 19:56:48 »

You'll find most of the crank on the floor...  ;D
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Re: 2.6 , which cams are better for low end?
« Reply #9 on: 03 January 2019, 20:40:46 »

Imo, the best option would be to pick up a 3.2 engine for a couple of hundred quid, and drop it in.
Serek might still have a few in a lock up of Noofland.

I think he has  a few, you would need Ar35 as well, ..
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Raeturbo

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Re: 2.6 , which cams are better for low end?
« Reply #10 on: 03 January 2019, 21:25:37 »

Will the turbo setup from the Saab  fit on it?  If so maybe you could get it on and run low boost and get it mapped to suit if possible. Is the ecu on your car able to be mapped?  Of course injectors,fuel pump, and the like will have to be uprated if you’re looking for big power,  but then you will need to strengthen the internals and update the transmission if you want that too.
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terry paget

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Re: 2.6 , which cams are better for low end?
« Reply #11 on: 03 January 2019, 22:43:00 »

I have had a couple of Omega V6s, very flat at low revs, that turned out to be suffering from the plenum dual ram stuck open.  It should be open at idle, closed between 900 and about 4000pm, and open above 4000rpm. I'm sure you have checked, just thought I would mention it.
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VXL V6

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Re: 2.6 , which cams are better for low end?
« Reply #12 on: 03 January 2019, 23:21:50 »

Easier to check the multiram (front and rear) operation with two people unless you have diag software to operate them.
GM did a very good job of the multiram, many people have tried to better it - Mantzel tuning boxes etc - but the only gains you're likely to find are noise and fuel consumption.
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Nick W

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Re: 2.6 , which cams are better for low end?
« Reply #13 on: 03 January 2019, 23:40:57 »

Easier to check the multiram (front and rear) operation with two people unless you have diag software to operate them.
GM did a very good job of the multiram, many people have tried to better it - Mantzel tuning boxes etc - but the only gains you're likely to find are noise and fuel consumption.


Unfortunately, the noise and jerky power 'curves' often convince people that poor modifications are actually an improvement. I know someone who complained after his poorly timed cam was reset even though the car then idled properly, accelerated without stumbling and returned more than 8mpg.
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Raeturbo

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Re: 2.6 , which cams are better for low end?
« Reply #14 on: 04 January 2019, 00:08:19 »

Yes, earlier setups like on the 3.0 Senator/Carlton 24V were very good too and was noticeable when it was not working (although a more simple version).
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