2.5 swap lets talk cams

[Custardtart]

Pretty much got everything needed to do this now (except a spare couple of weekends!) and have decided on a cam upgrade at the same time.

I've heard about Moto East's 1.5 cams but they seem a tad mild. I'm after a bit more, can be a bit lumpy but needs to still idle in traffic ok.

I was thinking I'd give Deckspeed a call but wondered if anyone on here had any other useful info?

[StanTheMan]

What profile are the standard ones?

[ozace]

I had mine cams swapped. Deckspeed got me a set of mild cams. The engine is now smoother than the OE cams, revs better and levels the torque curve. BUT power hasn't changed much if at all.

[Custardtart]

What profile are the standard ones?

Mines a 2011 Mazda 6 engine but below is the cams for the various engines and vehicles used for 2.5 swaps.

I haven't yet found out the profiles for the oem ones but I've heard some interesting info that the 2.0l cams are VERY similar in profile to the mild cams out there.

Intake L3E312420
Mazda 6 - 2003, 2004, 2005, 2006, 2007, 2008
Miata - 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013

Intake L3G212420A
CX-7 - 2010, 2011, 2012
Mazda 3 - 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Mazda 5 - 2008, 2009, 2010, 2012, 2013
Mazda 6 - 2009, 2010, 2011, 2012, 2013
Tribute - 2008, 2009, 2010, 2011

Exhaust L30912441A
CX-7 - 2007, 2008, 2009, 2010, 2011, 2012
Mazda 3 - 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Mazda 5 - 2006, 2007, 2008, 2009, 2010, 2012, 2013
Mazda 6 - 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Speed6 - 2006, 2007
Miata - 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Tribute - 2008, 2009, 2010, 2011

[Custardtart]

I had mine cams swapped. Deckspeed got me a set of mild cams. The engine is now smoother than the OE cams, revs better and levels the torque curve. BUT power hasn't changed much if at all.

Thanks for that. I probably want to go a bit more aggressive but without the cam details it's hard to really know. However, I do think the main benefit will be shifting the torque higher up in the rev range for track use rather than massive power gains.

It's interesting that you found it smoother with the new cams?

[ozace]

It's much more usable now. Speak to deckspeed I know is about to do a more aggressive set than mine. Depending on how that works out I may do it as well

[Custardtart]

It's much more usable now. Speak to deckspeed I know is about to do a more aggressive set than mine. Depending on how that works out I may do it as well

Had an email chat with Michael at Deckspeed and they do either the mild or race cams at the moment. The race cams would probably need new springs and be very lumpy so I might just go for the mild cams, it's not massive deal to swap cams but it is a decent chunk of cash assuming I can't then sell my existing ones.
As for the tuning, I think I've got this right in that I can instal the cams and load the base map from ECUtek using a cable supplied by Deckspeed and a pc/tablet, then drive around producing log files (stored on the pc/tablet) which I send to Deckspeed who then supply a more finely tuned map. Does that sound about right?

[ozace]

I am not sure how the tuning works, I drove my car from mel to syd to get it done in their facility. I cant wait to hear how yours work out

[Custardtart]

I've decided to use the 2.0l cams and see how we go. Below are some numbers that show the 2.0 offers a fair bit of improvement over standard 2.5 cams and considering the cheapest cams are around $1500 delivered I'll bank the saving for now.

Standard 2.5 cams: 254 duration, 9.3mm lift
Standard 2.0 cam: 268 duration, 9.3mm lift
Cosworth 270 duration, 10mm lift
Dynotronics 264 duration, 10.1mm lift

[ozace]

Can't wait to hear how it goes

[StanTheMan]

I've decided to use the 2.0l cams and see how we go. Below are some numbers that show the 2.0 offers a fair bit of improvement over standard 2.5 cams and considering the cheapest cams are around $1500 delivered I'll bank the saving for now.

Standard 2.5 cams: 254 duration, 9.3mm lift
Standard 2.0 cam: 268 duration, 9.3mm lift
Cosworth 270 duration, 10mm lift
Dynotronics 264 duration, 10.1mm lift

Do the 2.0L cams fit the 2.5? I was under the impression these blocks are now lazer cut like....every block is a different size or each block is proportionally sized depending on size.

edit* Maybe I'm thinking ND ...Not NC.

[StanTheMan]

super excited for you regardless....

I want Patchy back.

[Magpie]

The cams should be matched to what you want from the engine as well as the head.

I assume that you are doing no head work?

[Custardtart]

I've decided to use the 2.0l cams and see how we go. Below are some numbers that show the 2.0 offers a fair bit of improvement over standard 2.5 cams and considering the cheapest cams are around $1500 delivered I'll bank the saving for now.

Standard 2.5 cams: 254 duration, 9.3mm lift
Standard 2.0 cam: 268 duration, 9.3mm lift
Cosworth 270 duration, 10mm lift
Dynotronics 264 duration, 10.1mm lift

Do the 2.0L cams fit the 2.5? I was under the impression these blocks are now lazer cut like....every block is a different size or each block is proportionally sized depending on size.

edit* Maybe I'm thinking ND ...Not NC.

Straight swap. I have to admit that I'm very tempted to just swap the 2.0 head over given I'm going SC it probably makes little difference that the 2.5 head outflows the 2.0.

[Custardtart]

The cams should be matched to what you want from the engine as well as the head.

I assume that you are doing no head work?

No head work, keeping it simple and low cost