HKS 272 NOT Lopey??

[PredatorSniper]

I just took out my HKS 264's and installed my 272's. Watching videos on YouTube the HKS 272's sounded lopey. Not super aggressive but had a lopey idle/sound to them. I just installed mine, started it up, set the base timing and it doesn't lope a whole lot. Maybe a pinch more than my 264's but if so not much. How does your sound? As a side note: I put these cams strait up "0" I have not degree them yet. I'm running about 10-11 in of vacuum. I have not yet tuned it yet either with my V3. Maybe the sound will change after the tune or if I degree them?

 

[Mello]

HKS 272's. My are a little lopey. Not much.

 

[AllanL]

not much, actually almost stock, if timed correctly...

check ignition timing after install, as you may find that timing is retarded.

your boost gauge may read lesser vacuum, so the need to adjust your ignition timing.

exhaust sounds deeper though...

 

[turboglenn]

yea, not lopey at all really unless you kick the idle down to almost a stall... or add overla[p which kills tiop end power and loses more vacum at idle

 

[e85_4g63]

I have a set of Delta H272's. Just finished installing them yesterday. My car stalls when coming to a stop everytime and they sound no different then stock cams at idle. I know my idle is probably to low, but I'm not done with the install completely so I'm not complaining. Just letting you know my cams don't have a "lobey" sound either.

 

[turboglenn]

The only really lopey ones i've seen are 280's 288's and the unknown measured units pople have tested... that is unless you set the idle really low and time them wrong.., buti'd rather run fast and sound like OEM than sacrifice power for a cool sounding idle.. hell if i'm idling i'm not doing what i'm supposed to be with the car

 

[AK Maniak]

I have HKS 272's and with my idle set at 850 it is quite lopey. At idle I have about -15 vaccum

 

[e85_4g63]

I think my car has a couple boost leaks (can't test them till I go back to work tomorrow), but I'm also uncertain as to why my car has literally no "lobe" sound to it. I doesn't even sound like the cams have been changed. I have the stock gears. I posted the lobe measurements of the cams in another thread. Guess I'll have to measure my stock cams. hmm....

 

[My1GLaser]

Yeah, what's your idle? Mine are definitely lopey at stock idle and the car wants to stall. I idle at 1100 due to my alternator voltage...About 13-14inhg at 1100 and a little lopey. I just degreed them and the intake is retarded 3* and the exhaust is only retarded 2* which has reduced overlap some.

 

[e85_4g63]

My idle or the OP's? I don't wanna thread jack.

 

[boost97gst]

I have Crower 272s, idle around 900 and its pretty smooth, not stock for sure, but not too lopey. If you want lope and more top end kelfords 272s are much more aggressive. I wouldnt worry about it.
I pull around -14 vac at that idle any lower and i t lopes and is too choppy.

 

[turboglenn]

Yeah, what's your idle? Mine are definitely lopey at stock idle and the car wants to stall. I idle at 1100 due to my alternator voltage...About 13-14inhg at 1100 and a little lopey. I just degreed them and the intake is retarded 3* and the exhaust is only retarded 2* which has reduced overlap some.

I'm about 950-1000 (not to thread jack but contribute i hope) and i have little to no lump in my cams, but i also have the exhaust advanced 4* and intake retarded 2.5* for removing as much overlap as possible while keeping them as evenly spaced from "straight up" as possible so i can move them in unison to shift the band after i find the best power can from the given "hard set" of numbers in the combo

 

[My1GLaser]

I'm about 950-1000 (not to thread jack but contribute i hope) and i have little to no lump in my cams, but i also have the exhaust advanced 4* and intake retarded 2.5* for removing as much overlap as possible while keeping them as evenly spaced from "straight up" as possible so i can move them in unison to shift the band after i find the best power can from the given "hard set" of numbers in the combo

Why are you removing overlap?

 

[turboglenn]

For top end power, overlap on a turbo car where there's a lot of pressure in the area from valve to turbine wil cause more "spoiling " of the new charge than it will scavenging (after al you can't scavenge when there's a huge restriction outside the exhaust valve.. it would be about like using collector scavenging on the crank case after putting chamber mufflers on the ends of them

also adds vacum, steady idle, and made my car go frm losing steam above 7200 to being able to pull cleanly past 8k and gav eme my frst few late shift 9k RPM 1st and 2nd gear pulls, and i only felt any loss in low end when i waon a 67mm turbo that didn't spolo till after 5500, with the holset i'm spooling before 4k in every gear easily and pull my shifts as follows ~8200-8700 for the 1-2, about 8k for the 2-3 and about 7800for the 34