Results 1 to 11 of 11

Thread: 2.5L TIII distributor

  1. #1
    Garrett booster
    Join Date
    Oct 2011
    Location
    France
    Posts
    247

    2.5L TIII distributor

    What are the options to use keep the SMEC when doing a TIII swap ?
    The different TIII belt shape implies to use a TIII auxiliary gear which is smaller than the stock one.
    How can I adapt the stock distributor to the camshaft (and which one) ?

  2. #2
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
    Join Date
    Dec 2005
    Location
    Warsaw, NY
    Posts
    8,256

    Re: 2.5L TIII distributor

    simon (turbovanman) made an adapter. dunno if he still has any around or the plans or whatnot.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  3. #3
    Garrett booster
    Join Date
    Oct 2011
    Location
    France
    Posts
    247

    Re: 2.5L TIII distributor

    Thanks
    I will send him a PM unless he looks this thread

  4. #4
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
    Join Date
    Dec 2005
    Location
    Sherwood Park Alberta, Canada
    Posts
    1,212

    Re: 2.5L TIII distributor

    Some replace the T-III sprocket, shaft and oil pump with regular 8 V parts with success.

    It seems using the larger 8V sprocket slows the oil pump and eliminates some of the T-III oil pump issues.

    A side benefit might be the ability to use an 8V block and distributor if one had room.

    Thanks
    Randy


    Randy Hicks
    86 GLHS60
    86 GLHS 373 : SOLD, but never forgotten
    89 Turbo Minivan
    83 Turbo Rampage : SOLD
    Edmonton,Alberta,Canada

  5. #5
    Garrett booster
    Join Date
    Oct 2011
    Location
    France
    Posts
    247

    Re: 2.5L TIII distributor

    That seems a good idea but that mean you have to modify the 8V camshaft gears to the TIII camshafts and that also may lead to timing belt not aligned with all the gears (like with hybrid engines).
    A longer 8V timing belt may also be required

  6. #6
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
    Join Date
    Dec 2005
    Location
    Sherwood Park Alberta, Canada
    Posts
    1,212

    Re: 2.5L TIII distributor

    8 V sprocket on the intermediate shaft, AKA, oil pump drive shaft, not camshafts.

    Thanks
    Randy


    Randy Hicks
    86 GLHS60
    86 GLHS 373 : SOLD, but never forgotten
    89 Turbo Minivan
    83 Turbo Rampage : SOLD
    Edmonton,Alberta,Canada

  7. #7
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
    Join Date
    Dec 2005
    Location
    Warsaw, NY
    Posts
    8,256

    Re: 2.5L TIII distributor

    Quote Originally Posted by GLHS60 View Post
    8 V sprocket on the intermediate shaft, AKA, oil pump drive shaft, not camshafts.

    Thanks
    Randy
    wouldnt that chew up the trapezoidal tooth belt using it on a round tooth sprocket?

    i thought simon had a custom pulley made when he did this.

    i mean you could cut up an extra T3 cam gear and use the part with the teeth and weld it to the intermediate sprocket center section to make a larger diameter pulley for the intermediate shaft.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  8. #8
    Garrett booster
    Join Date
    Oct 2011
    Location
    France
    Posts
    247

    Re: 2.5L TIII distributor

    That's what I thought : is it possible to mix TIII and TI sprockets
    ?
    The belts have different shape

    A custom pulley would be best but where to get them made ?
    Welding may work if it is perfect centered and also, like I wrote, there is no problem with belt and sprockets alignment

  9. #9
    Super Moderator Turbo Mopar Staff contraption22's Avatar
    Join Date
    Dec 2005
    Location
    Havertown, PA
    Posts
    9,394

    Re: 2.5L TIII distributor

    Seems like a lot of work to retain the OE engine management. You have to start weighing the benefits of aftermarket vs the limitations of OE vs cost.
    Mike Marra
    1986 Plymouth Horizon GLMF "The Contraption" < entertaining sponsorship offers
    Project Log:
    http://www.turbo-mopar.com/forums/showthread.php?69708-The-Contraption-2013-14&highlight=

  10. #10
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
    Join Date
    Mar 2014
    Location
    Toronto Canada
    Posts
    972

    Re: 2.5L TIII distributor

    i mean you could cut up an extra T3 cam gear and use the part with the teeth and weld it to the intermediate sprocket center section to make a larger diameter pulley for the intermediate shaft.

    THIS ^
    thinkin' IF there are adjustable cam gears for the r/t motor then checking if the bolt centers for the bolts holding the two pulley halves together , ... it might be easier IF , IF IF IF the bolt centers for the adjustable 8V cam pulley were the same (????)

    so maybe an 8V adjustable center section with the rt's outter cam pulley section simply bolted together

    the 8V cam and intermediate shaft pulley are one and the same just flipped over
    -so that MIGHT allow for an extra way it might fit together if you can use part of two different adjustable pulley sets

    if doable then also being adjustable you can get the tooth to keyway alignment right on the intermediate pulley you've created

    always easier if something can just be bolted together .. and a call to someone .. who sells the adjustable pulleys might answer the question in short order..

    also I've seen posted here of elsewhere a two piece cam pulley made from two cam pulleys
    cut so the centers are overlapped giving space for the bolts to hold it together
    (I think being able to flip a section over allows the parts to overlap instead of trying to occupy the same space at the same time as the center hub is offset)

    a home made pulley using the r/t's cam outer and the inner section done the same way could seriously reduce the cost

    so machine shop with drill press vs machine shop with welder
    if made adjustable then there's the ability to correct any alignment mistake in making your custom pulley
    Last edited by Dr. Johny Dodge; 02-01-2019 at 05:24 PM.

  11. #11
    Garrett booster
    Join Date
    Oct 2011
    Location
    France
    Posts
    247

    Re: 2.5L TIII distributor

    I have 2 adjustable 16V camshaft sprocket and 8V one, I will try

Similar Threads

  1. TIII distributor adapters-done!
    By turbovanmanČ in forum General Vendor Area
    Replies: 15
    Last Post: 02-24-2014, 12:53 PM
  2. Gauging interest on TIII distributor plates and machined cam ends!
    By turbovanmanČ in forum General Vendor Area
    Replies: 61
    Last Post: 03-21-2008, 03:54 AM
  3. Running a TIII coil pack off the 8V distributor?
    By turbovanmanČ in forum Electrical & Fuel System
    Replies: 31
    Last Post: 01-21-2008, 12:42 AM
  4. TIII intake to clear the distributor!
    By turbovanmanČ in forum Parts Wanted
    Replies: 4
    Last Post: 08-20-2007, 02:47 PM
  5. What to do with intake for a TIII with a distributor?
    By turbovanmanČ in forum 2.2L/2.5L 16V Hybrid conversions
    Replies: 63
    Last Post: 01-14-2007, 07:10 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •