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Author
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Topic: Up grade on springs, retainers, and rockers???
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WANARNM
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Member # 587
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posted
 
 
What are some good springs and rockers that i can put on my AFR 185's. I just Dynoed my car on saterday and my HP on top flatens out after 58k or 59k. Anyone have any info they can share??
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89’ Hatch. Completely stock.
Posts: 1390 | From: San Jose | Registered: Nov 2001
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93PONY
Mr. Valve Events
Member # 60
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posted
Stock AFR valvetrain?
What cam are you running?
I can find springs to match & you can use the stock retainers/locks.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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JoeT
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Member # 298
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posted
springs are matched to the cam, period.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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AaronC
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Member # 86
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posted
How high are you trying to rev? I know AFR also changes the valves when they do their spring upgrades from the factory.
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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers
12.23 at 112.99
Best MPH 113.97
Posts: 776 | From: woodland | Registered: Dec 2000
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WANARNM
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Member # 587
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posted
I Upgradede the valves to some manly valves. The springs were just shimed, and i have 1.6 rr's from Gromm. The Cam is a isky cam. 544/573 dont really remember the duration. Its a blower cam. The numbers i pulled on the Dyno were 323hp@55-56k but will stay at 323 up until 6k rpm. they didnt rev it past 6k, but byron told me that the valves might be floating, so that might be the reason that the HP stays the same. the trqe was 321@55,000rpm. The heads were port matched to the holley intake. I am happy with the numbers i pulled but if i can pull a lil more with upgrading the valvetrain then i will. The motor is a 331 with a 9:1 comppresion ratio. Thanx for the replys guys.
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89’ Hatch. Completely stock.
Posts: 1390 | From: San Jose | Registered: Nov 2001
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93PONY
Mr. Valve Events
Member # 60
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posted
....It's a bit difficult to find the proper springs for a cam without the duration #'s.....but, the other info you provided will help.
Torque peaked at 5500rpm? If so, peak HP should be over 6500RPM. You say the stock AFR springs were shimmed, so that'll add a little pressure over the stock 110lb specs.
Well, without the cam specs it's better to over-spring it then under-springing as you'll run into the same problem you have now.
Comp 978 dual valvesprings. 146lbs seat @1.800 installed height. ~370lbs open. ~$130 from Summit. Install them at 1.800 inches.
You say you have a blower cam, so I assume you plan on slapping a blower on it eventually. These springs will allow ~8-10psi MAX from a blower when/if you ever slap one on. If you plan on pushing more boost, you'll need stiffer open pressure springs, in which case I'd call a valvetrain guru like Ed Curtis.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by WANARNM:
I Upgradede the valves to some manly valves. The springs were just shimed, and i have 1.6 rr's from Gromm. The Cam is a isky cam. 544/573 dont really remember the duration. Its a blower cam. The numbers i pulled on the Dyno were 323hp@55-56k but will stay at 323 up until 6k rpm. they didnt rev it past 6k, but byron told me that the valves might be floating, so that might be the reason that the HP stays the same. the trqe was 321@55,000rpm. The heads were port matched to the holley intake. I am happy with the numbers i pulled but if i can pull a lil more with upgrading the valvetrain then i will. The motor is a 331 with a 9:1 comppresion ratio. Thanx for the replys guys.
BYRON TOLD YOU
I told you both
that the valve's might be flooting
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Chris M.
Ignore me, all I do is argue online!
Member # 1708
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posted
well if it stopped revving, it's pretty obvious what is wrong
i always thought valve float would make a bit of a spikey flat line because the float isnt controlled by anything
Posts: 2828 | From: West Bay, CA | Registered: Aug 2002
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Chris M.
Ignore me, all I do is argue online!
Member # 1708
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posted
93PONY, I have out of the box TFS track heat heads with 1.460" double springs 125lbs at 1.780" and 334 lbs. at .500 in. lift and 376 lbs. at .600 in. lift open pressure. One night I was staring at my boost gauge to see how hi it would go (not a good idea because I forgot I took out my box with rev limiter) and right as it hit 17 psi the valves started to float and i let off instantly, my recall tach said 7,150rpm. Why do you say these springs...
"146lbs seat @1.800 installed height. ~370lbs open. ~$130 from Summit. Install them at 1.800 inches."
are only good for 8-10 psi?
Posts: 2828 | From: West Bay, CA | Registered: Aug 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
It has more to do with the ramp-rate of the cam.
Mild ramps like the stock cam require less spring to keep valvefloat at bay. Faster ramps, like the Comp XE line require MUCH stiffer springs. I'm guess this guys cam is not quite as steep as the XE line, but judging by the lift, it's not much softer.
I've seen valvefloat on an N/A motor at 6500rpm with 140lb (seat), 380lb (open) & a fairly mild XE lobed cam.
The weight of the valvetrain plays a factor too. The heavier the components, the more spring is needed. Ford Hydraulic roller lifters are on the heavy side.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
I would find out your cam specs and call AFR....They would probably know what works best with their heads.. ![[patriot]](graemlins/patriot.gif)
AFR's # 1(818)890-0616
Valve Spring Specifications
Part Number Size Pressure Material Coil Bind Rate Max. Recom.
Lift
AFR-8000 1.550 OD 210# @ 1.900 Chrome 1.145 470 670
.725 ID 515# @ 1.250 Silicone
AFR-8001 1.550 OD 260# @ 2.000 Special 1.100 560 750
.700 ID 650# @ 1.300 Silicone
AFR-8002 1.550 OD 170# @ 1.980 Chrome 1.145 475 650
.725 ID 430# @ 1.430 Silicone
AFR-8003 1.550 OD 280# @ 1.950 Special 1.100 676 750
.700 ID 720# @ 1.200 Silicone
AFR-8015 1.530 OD 140# @ 1.790 Chrome 1.100 350 600
350# @ 1.190 Silicone
AFR-8016 1.550 OD 140# @ 1.930 Chrome 1.140 410 600
.750 ID 365# @ 1.380 Silicone
AFR-8020 1.437 OD 120# @ 1.800 Chrome 1.090 325 550
.720 ID 300# @ 1.250 Silicone
AFR-8021 1.640 OD 250# @ 2.000 Chrome 1.070 645 860
.860 ID 800# @ 1.150 Silicone
AFR-8031 1.625 OD 235# @ 2.000 Chrome 1.120 560 800
.768 ID 650# @ 1.250 Silicone
Sorry maybe too much info..
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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WANARNM
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Member # 587
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posted
Thanx for thr replys guys. you have been ALOT of help. I will find out the duration and call AFR or Ed Curtis and see what they say. I will be at the track the 1st of feb to see what the car can do like it is now, then change the valvetrain and see what difference ther was.
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89’ Hatch. Completely stock.
Posts: 1390 | From: San Jose | Registered: Nov 2001
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