Best FP68HTA cams

[AlphaVision]

Hello,


I want to know your oppinion. I have FP68HTA turbo and I am starting my engine job. I want to really make it suitable for the turbo - fast responce and early spool. At this point I will not extend the RPM range.

So I am doubting what cams will be best for this turbo. I am thinking between HKS and Kelford 264's. I think I am leaning towards the Kelfords since they have greater lift, ramp and duration so they will give me more top-end performance as well.

What I want is to try spooling the turbo as early as it can spool and keep it that way till 7500 RPM. I read that it has been spooled at 3200 RPM and held 28 PSI till 8000 RPM so something like that will be great.

I want to push the turbo to it's limits and try to make around 450 HP. Here the fuel is 100 octane which is similar to your 93 so that will be the fuel.

The setup will look something like this:
- Walbro 255 HP
- FIC 1050's
- Fuelab AFPR
- FMIC with 2.5" piping
- stock TB and IM
- speed density setup
- forget pistons and rods (still deciding what brant)
- 8.5:1 piston CR, around 8.3:1 with a MLS Headgasket
- no springs at this point
- maybe some adjustable cam gears

any input and suggestions will be appreciated.

thank you.

 

[pboglio]

Well, I run the HKS 264's on the EVOIII 16g, bout as close to the 68HTA as you can get. Its a good combo but your going to find big topend increases with a better intake manifold. I take it your 6 bolt is running with a 1g intake manifold?

I have my Kelford 272's going in sometime this century and I'll report back how they affect the powerband.

 

[TSIMonsteR]

I vote Delta K264s. They are right at $350 for the set.

 

[AlphaVision]

Yeah, I have the 1g stock IM, but later on I may get a cyclone IM so my car has more low-end response. Bigger IM is not planned yet. I want to see how it will be with the stock IM.

Do I have to send my original cams to Delta. That will be a bit complicated...

 

[BogusSVO]

hey if you have a question for Delta Cam... go ask him....

DSM Forums - View Profile: Delta Cam

Hes a good Guy I have spoke with him some

 

[dsm-onster]

you need hella cam. The exhaust housing is too small and even the "big guns" have proven the gain is marginal. To maximize any oversized/overflowing compressor wheel you need huge cams. Kelford272s are HUGE larger than bc 288s. . .

 

[AlphaVision]

you need hella cam. The exhaust housing is too small and even the "big guns" have proven the gain is marginal. To maximize any oversized/overflowing compressor wheel you need huge cams. Kelford272s are HUGE larger than bc 288s. . .

Isn't that going to make my car too laggy and spool time too late

 

[pboglio]

The 264's are perfect for what you want to achieve. I think I've had mine for about 5-6 years now. They are about a 25 h.p. increase with a very pronounced midrange torque hit, I think you'll be very happy with them.

 

[constant_proj21]

Could always go with an hks 272 if you don't mind spending the money. I know a few people who have seen great results with them on a 16g. I loved my hks 264's, good torque, full spool at around 3300rpm on my 16g. That was with a lot less fuel then you're using, on 93oct. A kelford 264 is more comparable to a hks 272.

 

[dsmdeliveryboy]

Check out FP cams, I've heard nothing but good things about them.

 

[Ninharu]

I just got my 68hta as well. Im looking at a similar set up as you. I decided after a bit of deliberation to go with a set of fp1x cams. They will be going in as soon as the snow melts here. You might want to consider them as well, you just need upgraded springs to run them.

 

[AlphaVision]

Yeah, I know FP have very good cams but I didn't list them because I don't want to upgrade springs. Too much money have been thrown on the setup already

Well, guys I am still confused The question was HKS or Kelford 264's. Now we have Delta K264 and Kelfort 272's

 

[constant_proj21]

Kelford 272's are a pretty aggressive cam. If I'm not mistaken, they recommend an upgrade of springs. A delta regrind kelford 264 would be my choice. Or if you have the money, just a kelford 264.

 

[BoostFrenzy]

GSC S1's.

 

[keltalon]

Yeah, I have the 1g stock IM, but later on I may get a cyclone IM so my car has more low-end response. Bigger IM is not planned yet. I want to see how it will be with the stock IM.

Do I have to send my original cams to Delta. That will be a bit complicated...

I would recommend the BC 272s. These cams on the dyno produced the same hp down low as my hks 264s but made more hp up top. They are very streetable and very compatable with the stock intake manifold. After testing two set of cams the bc 272s is what I plan on running if I keep the stock intake manifold. When I installed the delta k272 they made a buch of more hp up top but I lost about 80 miles off my total gas mileage went from 300miles on e85 to 220ish miles on e85. For drag the delta k272 are great but my car is a daily driver I like the torque early! My likings may change when I test the Hks 272 delta grind or the BC 280s link to dyno sheets!

http://www.dsmtuners.com/forums/cyl...-kelford-272-bc-272-cams-3.html#post152124182

 

[AlphaVision]

Thank you. I've been reading your test thread frome the beginning and I would like to thank you.

Well how about streetability. Will 272's witht he proper cam adjustment spool up the turbo fast enough? Currently I put the 2G T25 and I love the response. I had to replace my 14b because its turbine housing was cracked and it spooled at 4000 RPM I hated it...

 

[keltalon]

Thank you. I've been reading your test thread frome the beginning and I would like to thank you.

Well how about streetability. Will 272's witht he proper cam adjustment spool up the turbo fast enough? Currently I put the 2G T25 and I love the response. I had to replace my 14b because its turbine housing was cracked and it spooled at 4000 RPM I hated it...

Trust me when I say the bc are streetable I mean it. I was soo shocked with the streetability I didn't want to take the cams out. My mind was made up that these are the cams I will end up running with the stock intake manifold. For one my gas mileage was awesome. For two the cams also have so much more potential even with the stock intake manifold up top and this is what I like about them. The combination of gas mileage and power is for me a perfect balance for my daily driver and if you chose later on to go with a set up similar to mine you almost certain welcome yourself to the 500hp club. I have had people trying to buy the Bc 272s from me since they have already been tested and I will not sell them because at this point they are what I will be using! I think you will really like them provided you use the proper cam gear setting 5 degree retard on the intake and 5 degree advance on the exaust. I still have my used Hks 264 that I will sell you if you like to try them out. they are a bit worn but worked perfect for me until I was selected to test some cams. 100.00 plus shipping I have no use for them anymore pm me and I can give you the low down on the 264s

 

[TSIMonsteR]

Kelford 272's are a pretty aggressive cam. If I'm not mistaken, they recommend an upgrade of springs. A delta regrind kelford 264 would be my choice. Or if you have the money, just a kelford 264.

The Delta k-spec cams are NOT regrinds. They are made from new billet cores, just FYI.

 

[AlphaVision]

All right. Having another look at the Kelford 264/260s seems that they have longer duration @1mm. But 0.050" is 1.27mm, not 1mm. Is 1mm same as 0.050" or it is not?

That means Kelford 264/260s are more aggresive cams than BC272s so BCs will be more for the street..

 

[romeen]

All right. Having another look at the Kelford 264/260s seems that they have longer duration @1mm. But 0.050" is 1.27mm, not 1mm. Is 1mm same as 0.050" or it is not?

That means Kelford 264/260s are more aggresive cams than BC272s so BCs will be more for the street..

1mm=.039"

 

[AlphaVision]

So no specs comparison on duration

 

[AlphaVision]

So I decided to go with the Kelford 264/260 setup and Manley springs. Max RPM will remain 7500. The cost will be same as getting HKS 272s but I think Kelford 264/260 will be more suitable for this turbo.

I guess these springs are good for the job.
EXTREME PSI : Your #1 Source for In Stock Performance Parts - Manley Performance Valve Springs: Mitsubishi Eclipse 90-99

 

[dsm-onster]

The ramp rate MAY be too aggressive for even manley singles. Looks like those smaller kelfords have an even more aggresive ramp rate than fp2x cams. Which manleys bearly eak by with a decent rev limit. . . It's a gamble.

.05" an .04" is very close. That is good enough to get you within a degree for comparison sake. IOW subtract a degree or two from the 1mm lift duration to get a really good comparison with .05" duration with another cam. . . It's close enough to get you the idea of where in the rpm range these will perform. Which is yes a bit more aggresive than hks272s and fp2Xs and FP3s and comp 101200s and bc272s.

 

[dsmdeliveryboy]

Check out the Graveyard Motorsports frankenstein 274/274 cams. They're pretty cheap too if your on a budget.

Graveyard Motorsports - Bury the Competition!

 

[dsm-onster]

Really confusing without the specs of the cam. What about it is like the hks272 an what about it is like the kelford 272? They are VERY different. Very different ramp rates, very differerent effective duration. Effective duration drastically affects power band. So what of each is utilized so that it's "Just as Drivable as the 272, and Power of the 280!" ????

Depending one what characteristic was borrowed from which grind, it could be fine with stock springs or be too aggressive for even high quality single upgrade springs.