HP cams

[slow 2K2GT]

Cams (http://shop.hyundaiperformance.com/shop/item.php?i=HWA_CSB264PA)

It says these require an ECU upgrade, I am assuming this would be sufficed with an SAFC right? These are on my after christmas wish list.

[azwildfire]

most likely your ignition timming changes more then your air fuel ratios... you would need a piggy back that can modify timming... the safc would not suffice...

that is my surmise

[jeffv1970]

for that price they better put out. 680.00 ea thats 1200.00 for cams. half way to a turbo or sc

[slow 2K2GT]

no that 680 that is for a set

[jeffv1970]

ok still think thats a little high

[slow 2K2GT]

Ok I just spoke to the guys at HP, they said that the SAFC would be fine as the cams require more fuel to run properly. Once they get back with a price tag than I will see what I can do.

[SWortham]

I'm thinking your car is going to idle rough. Maybe that's OK, just thought I'd mention it.

[only1db]

^....duh....but not that rough...did they tell you how much power they will make?

[slow 2K2GT]

When I spoke with Rshack who has a set of 268 cams in, he dynoed at 165whp. As for the rough idle, I had that with my VW and well I miss it now so the cams will be like a dream.

[SWortham]

Heheh, wild cams can be sweet with a V8. Not sure how our little engines are gonna sound. You should record a before & after sound clip if you do this. :)

As for power gains... I know cams can be a substantial upgrade but I've learned to be skeptical of just about any N/A power gains claimed by anyone associated in any way with the company. :rolleyes:

[slow 2K2GT]

Can do, I love the way they sound regardless. My little Jetta was the same size engine as the Elantra. With the cams in it had a very sharp agressive snap, big V8's have a very smooth "blublublublublub", and well my VW "blub....blu....bl....blub..b..blub". Now these were slightly more agressive cams 272 I think, but its close.

[FordFasteRR]

Can do, I love the way they sound regardless. My little Jetta was the same size engine as the Elantra. With the cams in it had a very sharp agressive snap, big V8's have a very smooth "blublublublublub", and well my VW "blub....blu....bl....blub..b..blub". Now these were slightly more agressive cams 272 I think, but its close.

Slow...

if in fact you are totally serious about buying these cams,
please perform a BEFORE dyno run...

then install the cams and go back to the same dyno and do an AFTER run...

so we can all know exactly what the changes in the power curve turn out :)


Thanks alot ! :)

[slow 2K2GT]

Ford just for you I will make sure to hit the dyno before and after. If time permits than I will do a before/after head work/after cam install/after fuel tuning. But yes I am totally serious about buying these cams, im just waiting on HP for a price. Then some head work while I got things apart and we should be good to go.

[only1db]

sweet cant wait to see the results.....i guess these cams would be too serious for a blower uh?

[tharptroy]

have you contacted REAL at all?

they would be another option

[slow 2K2GT]

sweet cant wait to see the results.....i guess these cams would be too serious for a blower uh?

Yeah for sure, you would want something that is tame like a 222 duration.

[FordFasteRR]

Yeah for sure, you would want something that is tame like a 222 duration.

most importantly, for a blower / turbo cam setup, you want a cam with as little overlap as possible, that will reduce reversion and help keep the boost from leaking out of the exhaust cam during overlap...

also, on turbo / blower cams, the exhaust cam is ground in such a way as to close earlier than on an NA motor which also helps keep the boost in the cylinders...

It is not unheard of to see a simple cam swap lead to 1-3 psi of boost increase...
the blower or turbo doesnt have to work as hard to keep the boost in the cylinders so boost is also reached quicker.. :)

[slow 2K2GT]

Ford knows his ****, good write up. I forgot I also have a light flywheel to go in too, so there will be one more dyno to do.

[tharptroy]

stock cams will be just fine with a blower setup, and adjustable cam sprockets could reduce overlap fairly easily

[FordFasteRR]

i figure i'd throw this little idea out there...

I have heard many people say ( including myself ) that if the mod works good for NA then it should work just as good or better for boost conditions...

This statement is only half true...

True half: usually, the mods that help the engine breathe will also help to fill the cylinders with boost more efficiently than stock..

Conflicting half: an many cases, NA cars use bigger cams with more overlap which helps cylinder scavenging to make more power in higher rpms... this same design practice will yield ineficiency in boost conditions because as we all know, more overlap leads to more boost leaking out of the cylinders !!!

:)

Keep that in mind.

[azwildfire]

and those of us with CVVT can have 20° of overlap up to about 3k rpms for MAD torque then our cam retards to NO overlap so we get MAD Hp :P

dont believe me ? read this!
http://www.azwildfire.com/hyundai/03-36-014-01.pdf

[pocket_geek]

Wow, that is a crazy amount of information...now my head hurts. It was very enlightening though.

[FordFasteRR]

and those of us with CVVT can have 20° of overlap up to about 3k rpms for MAD torque then our cam retards to NO overlap so we get MAD Hp :P

dont believe me ? read this!
http://www.azwildfire.com/hyundai/03-36-014-01.pdf


there is a conflict in their cvvt operation chart vs the paragraph next to it..

in the paragraph, it says the cvvt is advanced during high load & high rpm operation to maximize power..

but in the cart, it says that the cam is retarded under high load & high speed operation ...

I would venture to say the paragraph is right and the chart is wrong...

You will make more power in high rpms by increasing the overlap....

:)

[azwildfire]

you are right ford... and i noticed that and tested it myself ... i have been working with Perfect Power trying to make my SMT6 control the duty cycle of the CVVT unit so i can control the cams blah blah

[FordFasteRR]

REHEHEAALLY ?

did u strap it to a dyno yet ?

find out where it makes more power ??

I am willing to be my 1 cent that it makes more power on top by advancing the cam all the way ... !!!

= more overlap... and better cylinder scavenging !

however I could be wrong.. let the dyno tell the tale ! :)

[azwildfire]

with forced induction in top end you want the cams NOT overlapping. you have problem forcing air into the cyl. but want to keep the air as clean as possible *no mix with exhaust gasses*

i have strapped it to a dyno, but not with the SMT6 unit yet. i still have to tune it and what not

[2GTS]

Ok I just spoke to the guys at HP, they said that the SAFC would be fine as the cams require more fuel to run properly. Once they get back with a price tag than I will see what I can do.
Why are you waiting for a price? Is it cause you're in Canada or are the prices in the HP store negotiable and I just don't know about it?

[slow 2K2GT]

no no I need to know shipping costs...for a total see if I can swing it now or wait till next pay

[FordFasteRR]

with forced induction in top end you want the cams NOT overlapping. you have problem forcing air into the cyl. but want to keep the air as clean as possible *no mix with exhaust gasses*

i have strapped it to a dyno, but not with the SMT6 unit yet. i still have to tune it and what not




ohh i forgot you are FI... my reply was intended for the NA crowd... :)

[2GTS]

no no I need to know shipping costs...for a total see if I can swing it now or wait till next pay
Ok I was a little confused there for a bit. Good luck with the install, I can't wait to see what gains you get.

[oregun]

Okay, so I've been eyeing those 268 cams on HP.com for the last month and I've been waiting to hear back on this thread. Has anyone ordered these yet?