North American Turbocoupe Organization



best was to replace valve spring in car
BJL Offline
Moderator
#1
i need to replace the valve springs in the 87 soon and wonder whats the best way with out removing the head.
will putting compressed air in the cylinder work. i have a cylinder leak down tester that could work.
or is the old rope trick best?
i replaced valve and springs a lot with the head off but never with it still on the block.
any help would be great thanks
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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Pete D Offline
Administrator
#2
Compressed air will work. So will the rope trick.
Pete Dunham


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BJL Offline
Moderator
#3
perfect! love the fast response.. now off to order the double springers!
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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Not B Anymore Offline
Administrator
#4
I used the nylon rope and it worked fine. I think next time I would probably go for the air though.
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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bang4thebuck Offline
Senior Member
#5
I used rope. I still have the essy tool to remove the followers and compress the springs in no time. You can borrow it if you need it. If you are using compressed air the psi has to be really high to hold em shut. I think you need a little over 100 psi.
1987 TC 5 speed. To date: AGP 50 trim T3/T4 .63 stage 2 turbo, Ebay bov, 28psi, 255hp pump, Kirban FPR, Ebay Front mount, Full 3 inch Exhaust, Ported Bob's Log, Megasquirt, 55lb. injectors, boport 1.5 cam, boxed lower control arms, Methanol Kit, Ram HD Clutch, front lowered 1/2 inch and E.T. Streets for the track. Best so far 12.5 at 110.8. still tuning.
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Huey866 Offline
Posting Freak
#6
I used rubber vacuume hose to do mine.
87 TurboCoupe - silver, 137k, 5-speed, 3.73 w/ superior axles, Maximum Motorsports suspension, 03 Cobra Brakes, 93 GT vacuum assist, Griggs Subframe connectors, RR cam, Essy Adj. Cam Gear, Boblog, Bob Elbow, .63 T-3, ARP headstuds, Stinger 3in Exhaust, Magnaflow Muffler, AEM gauges, Tweecer RT, Godspeed Omega 18x9
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BJL Offline
Moderator
#7
ok i have that claw tool i bought like 8 years ago when i did my cam install. i guess ill try rope. my compressor at home hits 120psi and at work its 240psi. so i got options...
gonnna be awesome ot have two fast cars agian.. plus a low and slow truck
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
Reply

Paulie Offline
Banned
#8
Sir if you have a compressor that can produce 120 LBS its good to go. I never used the rope system and really cant say if it works. But it sounds like i would use your compressor. Here is a tip to make the job easier. Once the cylinder is full of AIR or ROPE. and the rocker is removed. Use a small hammer and break away the retainers from the keepers by tapping the retainers on the side of their rim. This will release them and you will know when this happens because the feel of the hammer will get springy. This is necessary to not push the valve down with the crow foot tool. Thanks and good luck on you spring change. Another thing you might want to do is replace the stem seals at the same time. Have a good morning SIR
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Huey866 Offline
Posting Freak
#9
Quote:Originally posted by Paulie:
Another thing you might want to do is replace the stem seals at the same time.
+1

Good call Paulie.

Its a PITA to replace springs (especially double springs) so you might as well do that while your in there.
87 TurboCoupe - silver, 137k, 5-speed, 3.73 w/ superior axles, Maximum Motorsports suspension, 03 Cobra Brakes, 93 GT vacuum assist, Griggs Subframe connectors, RR cam, Essy Adj. Cam Gear, Boblog, Bob Elbow, .63 T-3, ARP headstuds, Stinger 3in Exhaust, Magnaflow Muffler, AEM gauges, Tweecer RT, Godspeed Omega 18x9
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Paulie Offline
Banned
#10
Thank you Huey that is how i have always done it. If you have the springs off you might as well change the seals. Have a good Sunday morning sir. Thanks
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