replacing the slider stock cam with a roller. Have replacement roller followers and roller cam.
Do I need new lifters or will the current ones be ok?
replacing the slider stock cam with a roller. Have replacement roller followers and roller cam.
Do I need new lifters or will the current ones be ok?
Im doing the same, here i was told lifters are the same, but valve springs need to be replaced with roller cam head springs
no kidding. I thought the springs were the same. I think this head might have the good springs but won't know till I pull the VC.
In a nutshell no, but if you can get some PT's, your engine will love you for it. Springs you can't really check on the car but if its stock, leave them be. Rocker arms, yep.
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS!12.57@104 :O)
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Quick way to check is to use dial or digital calipers on spring diameter. Stock slider will have .177" and rollers will have .187". Most performance aftermarket springs will be .190-.200. Spring pressure was increased a bit (open and closed) at the factory when the roller cams were introduced, at least on turbo applications.
Todd
PT's make the engine run better?
The springs look the same as the springs on my recent rebuilt head for glhs 313.
So you can see .010 difference in diameter?
Yes PT's will help the engine run better as they don't collapse like stock lifters. They're also cheaper than stock lifters.
The head on the car is a recent rebuild and has the exact same paint marks as the other springs.
Being a mechanical engineer and a manual and cnc machinist I think you would be surprised how much I can tell from looking at mechanical devices.
Got snarky in here fast.
lol, was going to suggest you should go into the machining field. Most people can't see that but Machinists can.
IS there a difference between slider a roller springs? I have a roller cam on slider springs in the Lebaron, might be why it seems noisy and sets the knock light off...
okay ordered PT lifters. Now if the weather would quit with the 100 degrees I could go outside without vaporizing.
Now is this a particular year pt motor lifter? Just 16v or turbo? I see loads of PTs in the junkyard
Best thing to get is the MP 2.4 lifters. They're new, and have the metal valve, aftermarket have switched to plastic valves.
Also remember you need the shims for them. Easiest way to do it is have The Pope send you some or if you find the thread over at TD.com the part # for a box of them at our local industrial supply house is available. These are a specific hardened Grade 8 washer that has the correct thickness with 2 in each bore and the correct diameter.
I got a kit from onerippinturbo2 on TD.com $86 w/shims shipped.
that works too.
No definitive answer?Originally Posted by Force Fed Mopar
Todd said there is but it won't make your top end noisey, it could cause a bit of valve float at high boost.
Look for the hole in the top, the early models didn't and had oiling issues, Mopar upgraded them with the bleed hole.
1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS!
1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
2004 GSW TDI, 5 speed, fully loaded, modified.
Aurora ignition wires for sale. Link to info
Super60 roller cams or custom/billet cams. Link to info
Hmm, maybe my lifters are just worn out then, cause it is pretty noisy. They were used ones anyway. Might have to throw another set in and see. I do remember having to shim them a good bit more than what it is said to. IIRC I had to shim to around .170 to get them to run quiet to start with.
Cam installed with roller rockers and pt lifters. Without redoing the timing belt...epic.
Seems quieter and has great low end power. So far so good on the cam side but still have that dang miss and throttle hesitation.
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