1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Oddball 198 V6 - Parts

Discussion in 'Early CJ5 and CJ6 Tech' started by Bigdaddy13, Dec 16, 2019.

  1. Dec 16, 2019
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    ok, so i know well enough that the support for the 198 is pretty sparse, but for something as mild as the thermostat housing has anyone found something “close enough”?

    For example, i gave a Buick 300 V6 water pump a try, and other than being a bit short(pulley alignment suffers a bit), it bolts right up.

    Do i need to have the little water bypass port? If i can match up everything else is that optional?
     
  2. Dec 16, 2019
    44bz

    44bz Member

    Oregon City OR
    Joined:
    Jul 30, 2018
    Messages:
    130
    A 225 thermostat housing fits. That's what I put on mine. I also used a 225 water pump. It also bolts right up and all my pulleys (alternator, power steering, crank, water pump) line up. I haven't run the engine yet as my CJ2a has been a project since I acquired it.
     
  3. Dec 17, 2019
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    Got it, thanks! I have one coming into my local parts store tomorrow. Hopefully it'll match up to my worn out OEM example.

    The Part I ordered was # 84853 - Water outlet. Looks correct from the pic and is only $12.00, so if it works, I'm stoked.

    I'm trying to do some basic stuff on this motor, and give it some love, since it runs.

    How about Oil filters?
     
    Last edited: Dec 17, 2019
  4. Dec 17, 2019
    44bz

    44bz Member

    Oregon City OR
    Joined:
    Jul 30, 2018
    Messages:
    130
    I have a 225 oil filter on mine right now. My motor is still on the stand. I was leaning toward converting to a remote oil filter since the filter points straight down in the stock location on the 198. I'm worried about axle clearance. When I brought home my 2a the 198 was installed with poorly made motor mounts. It sat low enough in the frame that I could not remove the oil filter with the motor in place because it hit the axle.
     
  5. Dec 17, 2019
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    Interesting. my oil filter points forward, horizontally in the 2 o'clock-ish position.


    I'll check into a 225 filter, thanks!
     

    Attached Files:

  6. Dec 17, 2019
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    4,170
    Your Buick 198 V6 and the Buick Alloy 215 V8 are the same family of engine and share many parts. They were both produced from '61-'63 and used in the same model cars. Variants of the V8 were also used in Olds and Pontiacs (up to '62 for the Pontiac). The V8 rights were sold to Rover (England) in the mid-'60s and were produced and developed up to around the 2002 model year. There are still many Rover external parts that interchange with your 198, including oil pumps and timing covers through the later '90s. All the alloy V8's up through 2002 share the 198 V6 bellhosing pattern.
    The 198 V6 was developed further by Buick for '64, changing the bellhousing pattern to the universal BOP (Buick, Olds, Pontiac, Cadillac), and increasing displacement to 225. Buick also brought out a 300 iron block V8 at the same time. Jeep started using the 225 for the '66 model year for the CJ, and Buick cars continued using the 225 from '64 through around '67. Buick revived the V6 around '75 -'77 as a 231, still odd-fire, but with an HEI distributor. For '78-on, they were developed the 231 as an even-fire by modifying the crankshaft journals. Buick and Cadillac used a 252 version of the V6 in the 1980's.
    Lots of external parts will still interchange with your 198 through this whole range.
    There are at least 3, maybe 4 interchangable oil pump housings that position the oil filter down, forward, or sideways, so you can choose what works best for your application. Long and short filters also interchange to help with clearance issues.
    There's lots of combinations that can be used in our early Jeeps, but it helps to know when changes were made and what pieces interchange.
    -Donny
     
    homersdog likes this.
  7. Dec 17, 2019
    44bz

    44bz Member

    Oregon City OR
    Joined:
    Jul 30, 2018
    Messages:
    130
    Maybe the oil filter adaptor is also interchangeable between the 198 and 225. I haven't looked into that, but I assumed the stock orientation for the 198 was pointed down.
     
  8. Dec 17, 2019
    duffer

    duffer Rodent Power

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    4,459
    You still need to have some sort of bypass. That protects the water pump from cavitation when the thermostat is closed. You can drill a few 1/8" holes in the thermostat to achieve this but you have to remember that when replacing the thermostat and repeat the process.
     
  9. Dec 17, 2019
    Charlie Wells

    Charlie Wells New Member

    Macon
    Joined:
    Oct 10, 2019
    Messages:
    5
    Not to hijack the thread, but what years of the 231 would be a direct replacement for my 69 dauntless?
     
  10. Dec 17, 2019
    Chris Insull

    Chris Insull All roads lead me back to the beach... 2023 Sponsor 2022 Sponsor

    Chesapeake, VA.
    Joined:
    Sep 22, 2002
    Messages:
    805
    TA Performance sells them as well... with bypass included.
     
  11. Dec 18, 2019
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    4,170
    The engine block is essentially the same between the 225 and the 231, so things will physically interchange. The big problem is the flywheel. The 225 uses a very heavy one unique to that engine. The odd-fire 231 was used in passenger cars and it was close to half the weight of that used in the V6 Jeep, plus, most cars of that era had an automatic/flexplate. Nearly all of the even-fire 231's also used an automatic transmission and required a very different balance configuration compared to the odd-fire. Not too many Buick Regals or Grand Nationals had a manual transmission. The bottom line is finding the correct flywheel is is difficult part of the swap, providing you are running a manual transmission.
    Get past the flywheel stumbling block, any 231 from '75 through the mid-80's would likely bolt in without too much hassle.
    -Donny
     
  12. Dec 22, 2019
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    How about exhaust manifolds.

    I decided i kinda despise the fenderwell headers. They’re in the way of rock sliders, are a prime target for trail damage, are ready and waiting to burn my hands if i drop a tool in that area with the engine hot, and ready dump exhaust into the pass. Compartment, while driving, etc...lol.
     
  13. Dec 22, 2019
    44bz

    44bz Member

    Oregon City OR
    Joined:
    Jul 30, 2018
    Messages:
    130
    225 exhaust manifolds will bolt up.
     
  14. Apr 23, 2020
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    so the Novak block huggers should work bolt pattern/exhaust port-wise?
     
  15. Apr 24, 2020
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    Tubing headers - Noisy, fragile, hot, leaky, expensive race car tech. Otherwise, they're great! :coffee:
     
  16. Apr 24, 2020
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    Yeah, unfortunately, i can’t seem to find a good set of manifolds that aren’t $$$$$$. I’d be fine paying $100-150 for the pair but i have only found one for 200.00 on ebay [facepalm]
     
  17. Apr 24, 2020
    Jonbbrew

    Jonbbrew Member

    Paso Robles, CA
    Joined:
    Mar 14, 2015
    Messages:
    739
    I did hook all that up. It took me a little research to figure it out since i was not familiar with these motors. I dig up a few pictures to post if you like, but i didn't like how the PO had blocked ports off etc. Even if it does not do anything productively to me it looks cleaner and nicer.
     
  18. Apr 24, 2020
    Jonbbrew

    Jonbbrew Member

    Paso Robles, CA
    Joined:
    Mar 14, 2015
    Messages:
    739
    Do you know if the intakes are different? I want to say from my research that they are.
     
  19. May 7, 2020
    Bigdaddy13

    Bigdaddy13 Member

    So.Cal
    Joined:
    Nov 19, 2019
    Messages:
    556
    ended up getting some exhaust manifolds from a ECJ5 member. 225 manifolds bolt right up.
     
    Last edited: May 8, 2020
  20. May 7, 2020
    Richard in AZ

    Richard in AZ I just don't understand the like of patina

    PHX AZ
    Joined:
    Feb 22, 2016
    Messages:
    142
    I have a 198 on a stand in my garage.....tried to test fit a 225 intake on it....I am certainly no expert but it looks like the 225 intake is larger (wider). The bolt holes were all a half of a hole off.

    Richard
     
    Bigdaddy13 likes this.
New Posts