85ish TBI lifters, springs, etc... - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more!

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post #1 of 22 Old 02-27-2018, 03:13 PM Thread Starter
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85ish TBI lifters, springs, etc...

Alright, so my Rampage has a TBI 2.5 swapped in it from the PO. I was told that it came out of an 85 Aries, but some of the replacement parts and harness plugs have matched later years. EGR delete, PCV to ventilated catch can, 2.5" exhaust.

Anyways, my point to this thread is to better understand my options for an improved valvetrain. I've seen many threads covering a vast range of topics irt it, but most have the intention of performance gains or have a different setup.

I know I plan to swap the OEM lifters out for some Melling PT lifters with shims. What about springs though? I keep reading about 3.3s and beehive etc, but I don't really care much about how it affects my 1/4 mile. I just want to improve how efficient the head operates without spending a fortune. Eventually I will be swapping a 6bt into her, so for now it's just for an improved DD. I rather dread going on the highway as she is.
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post #2 of 22 Old 02-27-2018, 05:57 PM Thread Starter
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I've also read that there are differences between the TBI cam and the others? Differences between the TBI exhaust manifold and the others?
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post #3 of 22 Old 02-27-2018, 09:42 PM
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Re: 85ish TBI lifters, springs, etc...

Wes, sounds like you're having about as much fun as I am with PO stuff. 🤔

I would highly recommend purchasing the PT lifters fro one of our own. He has a lot of good stuff for our cars/trucklets.

PT Lifters and Shims for turbo Dodge Cars
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post #4 of 22 Old 02-27-2018, 09:54 PM Thread Starter
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Quote:
Originally Posted by Wildwest View Post
Wes, sounds like you're having about as much fun as I am with PO stuff. ?

I would highly recommend purchasing the PT lifters fro one of our own. He has a lot of good stuff for our cars/trucklets.

PT Lifters and Shims for turbo Dodge Cars
Are the Mopar lifters really worth the price difference? I can get eight new Melling/Sealed Power PT lifters for ~$50. I also have a lathe that I can use to turn my own shims.

Last edited by Wes Henderson; 02-27-2018 at 11:36 PM.
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post #5 of 22 Old 02-28-2018, 05:18 AM
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Re: 85ish TBI lifters, springs, etc...

That engine is most definitely NOT from 1985
TBI/2.5 didn't come out till 1988-89

Check out this site and the "Turbo Database" for more info on engines.

The Dodge Garage
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post #6 of 22 Old 02-28-2018, 05:55 AM
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Re: 85ish TBI lifters, springs, etc...

back to Original Post -
you are asking about 'improving' the valvetrain, or making it more 'efficient' ..
can yu tell us more specifically what you're goals are ?

no need to machine yur own PT lifter shims/spacers when available washers do the job;

PS - TBI/2.2 goes back to 1984..
https://www.allpar.com/mopar/22-chronology.html
who knows what he's got there ?!
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post #7 of 22 Old 02-28-2018, 08:50 PM Thread Starter
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Interesting... Well, out of curiosity, I would like to identify exactly what it is. I'll spend some time probably this weekend and see what I can come up with. My sole reasons behind the "improvements" are to make it more reliable, a bit quieter and just overall more sound mechanically.
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post #8 of 22 Old 02-28-2018, 08:55 PM Thread Starter
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Quote:
Originally Posted by Wildwest View Post
Wes, sounds like you're having about as much fun as I am with PO stuff. ?

I would highly recommend purchasing the PT lifters fro one of our own. He has a lot of good stuff for our cars/trucklets.

PT Lifters and Shims for turbo Dodge Cars
I never realized he sold good used lifters until my lethargic browsing last night. Went ahead and ordered them. $59 for shims and used Mopar lifters vs ~$55 for new Mellings and making my own shims... That was an easier choice to make.
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post #9 of 22 Old 02-28-2018, 10:44 PM
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Re: 85ish TBI lifters, springs, etc...

Look around his website, there a lot more stuff available. He's also a great knowledge source as well.
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post #10 of 22 Old 03-01-2018, 05:53 AM
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Re: 85ish TBI lifters, springs, etc...

ok, 'quieter' is a good thing ..
the best thing you can do for that is to make sure you are running a '88+ "roller" cam and 'followers' ..

MUCH quieter than the 'slider' cam !
this upgrade also reduces valvetrain friction ...

it was part of the "Quiet-Idle" package promoted in '88,
another component being a sheet-metal 'curtain' underneath the valve cover (N/A engines only)
(I think I still have a couple in my garage..., but the rubber isolaters may be hard to find)

otherwise swapping a cast aluminum valve cover will help reduce the transmission of valvetrain noise;
you can run any TURBO (89+ use a O-ring gasket) or the N/A finally got one in '94-5 (a bit rare) (also uses O-ring gasket)

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post #11 of 22 Old 03-02-2018, 11:29 PM Thread Starter
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Quote:
Originally Posted by detobias View Post
ok, 'quieter' is a good thing ..
the best thing you can do for that is to make sure you are running a '88+ "roller" cam and 'followers' ..

MUCH quieter than the 'slider' cam !
this upgrade also reduces valvetrain friction ...

it was part of the "Quiet-Idle" package promoted in '88,
another component being a sheet-metal 'curtain' underneath the valve cover (N/A engines only)
(I think I still have a couple in my garage..., but the rubber isolaters may be hard to find)

otherwise swapping a cast aluminum valve cover will help reduce the transmission of valvetrain noise;
you can run any TURBO (89+ use a O-ring gasket) or the N/A finally got one in '94-5 (a bit rare) (also uses O-ring gasket)
Well I have the cam with roller rockers and the inner curtain. However...

I tried installing the recommended PT lifters and noticed something was off as soon as I attempted to restart the engine. Out of curiosity I took a micrometer to the old lifters and the new ones, including shims. They are about .037 off. The old ones are 2.042" and the PTs are 2.005". Any advice? I'm not blaming the site I bought them from, but I AM frustrated nonetheless. I even checked four of the eight on each. Then I just swapped the originals back in and she fired back up.

I'm assuming (and hoping) the following was from me running rich about 100 miles ago, but damn! Really? Is there something else going on?

Well, attachment limit reached?... Okay, I'll describe it. The entire valve cover was coated in 1/4" of "butter" almost. It wasn't anywhere else in the head except the valve cover and pcv hoses.
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post #12 of 22 Old 03-02-2018, 11:39 PM Thread Starter
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Quote:
Originally Posted by Wes Henderson View Post
I'm assuming (and hoping) the following was from me running rich about 100 miles ago, but damn! Really? Is there something else going on?

Well, attachment limit reached?... Okay, I'll describe it. The entire valve cover was coated in 1/4" of "butter" almost. It wasn't anywhere else in the head except the valve cover and pcv hoses.
Damn, after a quick epiphany I think I realized what is going on. My pcv oil catch can is set up with a check valve that's apparently stuck open. Its pulling the ever moist Washington air in and it's condensate byproduct. Meh...
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post #13 of 22 Old 03-03-2018, 12:38 AM
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Re: 85ish TBI lifters, springs, etc...

1986-1988 2.5's were all "Tall Deck" TBI Engines, no carb or Turbo versions.

1989 and newer were "Common Block"

1986-1987 2.5 had a "long" square tooth timing belt.

1988 only 2.5 had a "long" round tooth timing belt.

1989 and newer 2.2/2.5 took the "short Common Block" round tooth timing belt.

All 2.5 Engines had a 4.09" stroke, easy to check through a spark plug hole.

The difference from BDC to TDC will be slightly more than 4"

All 2.2 Engines had a 3.44" stroke. (3.622") Thanks Todd !!

1985 Aries could have had a 2.2 TBI, "short square tooth" timing belt.

Thanks
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Last edited by Glhs60; 03-03-2018 at 01:43 PM.
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post #14 of 22 Old 03-03-2018, 11:14 AM
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Re: 85ish TBI lifters, springs, etc...

Quote:
Originally Posted by Glhs60 View Post
1986-1988 2.5's were all "Tall Deck" TBI Engines, no carb or Turbo versions.

1989 and newer were "Common Block"

1986-1987 2.5 had a "long" square tooth timing belt.

1988 only 2.5 had a "long" round tooth timing belt.

1989 and newer 2.2/2.5 took the "short Common Block" round tooth timing belt.

All 2.5 Engines had a 4.09" stroke, easy to check through a spark plug hole.

The difference from BDC to TDC will be slightly more than 4"

All 2.2 Engines had a 3.44" stroke.

1985 Aries could have had a 2.2 TBI, "short square tooth" timing belt.

Thanks
Randy
Chrysler 2.2's have 3.622" stroke. Randy was just testing us to see if we were paying attention. 3.44" was bore.
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post #15 of 22 Old 03-03-2018, 01:45 PM
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Re: 85ish TBI lifters, springs, etc...

Quote:
Originally Posted by 4 L-bodies View Post
Chrysler 2.2's have 3.622" stroke. Randy was just testing us to see if we were paying attention. 3.44" was bore.
Appreciate the clarification Todd!!

My excuse is it was very late when I made my post.

Thanks
Randy
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