Airtrek cams

[Poacher]

Hi Guys,

Was having a quick look at my cams today and it appears they are hollow, did 03-05 models ever come with hollow cams? Or is it possible they have been replaced with evo 7/8 hollow cams?

Any easy way/model number to tell?

 

[4gbanger]

might be or might be not... some said it is hard to note the different..

 

[stutzedward]

Airtrek original cams are hollow just like E7&8 ones.

 

[kaninbu]

physic 101.solid cam is heavy thus,it only increase its inertia.

 

[Poacher]

Ahh i see, so my cams most likely stock then, thanks

 

[kaninbu]

the rounder the water droplet shape,the longer it open the valve..

 

[stutzedward]

Some in-honest seller does these:

- selling Airtrek cams as Evo 7 / 8 cams as they look the same. Can't differ by naked eyes
- engrave HKS words on Evo cams and sell as genuine HKS cams.

I ain't making this up. Ah Wah was the one who told me as he came across customers being cheated. Just sharing.

All Airtrek Turbo versions came with hollow cams like Evo 7&8.

 

[kaninbu]

yea...rm500 turn rm2000..good money

 

[stutzedward]

Ya man. That's the sad story of the society these days.

 

[4gbanger]

i notice slight different with E7 and E8 cam.. E7 cam is posted somewhere in this airtrek forum. this is E8 cam picture (as i googled this picture)

 

[4gbanger]

hopefully this info helps..

 

[Poacher]

I now have evo 8 cams (not sure if 8, or 8MR models) going to install today. Since i don't rev over 7k as power drop from there, i think stock springs will be ok for up to 7kRPM, anymore and i know i will need evo springs. Also our stock manifold makes power lower rpm than evo by 500rpm.

Has anyone had ok/good results with stock springs/retainers with evo 8 cams on airtrek to 7k? I don't have the tools to swap the springs and i can do the cams in a few hours easily.

I might do springs when i replace the lifters getting ticky.

What do you guys think?
Johno

 

[4gbanger]

well i change my cam last time without evo springs but didnt rev till 7000rpm because of wrong plug usage. so its jerking alot after 4000rpm on full boost. now change to correct plug n evo 3 springs, rev till 7000rpm. my suggestion is if u want to increase ur boost over 1 bar and rev till 7000rpm, better change. but u can still maintain stock valve spring but better not get the boost too high.. hope this helps..

 

[stutzedward]

It doesn't mean not having evo springs won't work. It will still see substantial improvement in response and more power felt. Just that at higher rpm above 5500rpm, the power delivery isn't smooth. It's more of vibrating graph lines on the dyno chart. So if you want perfect combination, use evo springs. Else Airtrek springs will work too. Hope this explains.

 

[Poacher]

I just realised i was thinking about my old car when i wrote it, cause that went to 9250rpm lol. oops. I actually don't go over 6k on my car. 6.5k max if tuning, 6k for anything fast. Normal driving is up to 5500rpm on motorway for me.

I forgot redline was 7k in our car (7500 cut) as my last car had higher power delivery.

 

[stutzedward]

Atr springs work for yr needs then.

 

[Poacher]

Atr springs work for yr needs then.

Sweet! I need to try clean my lifters too while i am there noisy, might just use additive works ok.

I assume stock cam gears ok? Then i don't have to remove timing belt can just lock in please,

Will get rocker cover powder coated RED while i have it of :D YUSS

 

[4gbanger]

yup.. stock cam gears will do.. just tied it.

 

[stutzedward]

I'm using stock cam gears with Evo cams, no issues. :)

 

[Poacher]

Hey can someone tell me what their idle vacume pressure is on boost gauge? Need to compare (with td05 FMIC preferably) to see what leaks i have. vacume at idle in neutral, vacume at idle in gear, and vacume down hill in 4th at 60km. Thanks