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Thread: ID of lower IC hose at midpoint?

  1. #1
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    ID of lower IC hose at midpoint?

    Does anyone know what the inside diameter of the lower IC hose is in the middle body portion of it? I would like to cut the hose on my lancer and put in a piece of pipe with a BOV on it. If I know the size ahead of time I can get the pipe and figure out where the best spot for it would be while it's on the car.

    ETA: What is everyone doing these days for a blow off valve? It just occurred to me that I will have to actually buy one for this car since I don't have any on the shelf.
    Last edited by cordes; 05-25-2020 at 02:37 PM.

  2. #2
    turbo addict
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    Re: ID of lower IC hose at midpoint?

    Hey Brian,
    When I use the DSM 1st gen BOV's, I use the metal tube as well. I mount it just a bit in front of the lower intercooler inlet. Just need to trim off the mounting bracket. That tube is 1-3/4" OD. The ends have a nice bead roll on them. Fit the lower intercooler hose about perfect. It is a close fit to the reverse light switch on the tranny, but everything clears. Room for a filter on the end too. Attachment shows location, minus the little stub that bolts to lower intercooler hose. This was for install on L-body (of course).
    Todd
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  3. #3
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    Thanks Todd. This has jogged my brain and I think I might actually have one of those lying around somewhere. Now to find it...

  4. #4
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    ETA: I'm super jealous of the ATP swing valve. If I would have realized what a difference those made when they were actually for sale, I probably would have purchased enough of them to keep them on the shelves to this day.

  5. #5
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by cordes View Post
    ETA: I'm super jealous of the ATP swing valve. If I would have realized what a difference those made when they were actually for sale, I probably would have purchased enough of them to keep them on the shelves to this day.
    Yeah all that stuff in photo went on my old SFB GLHT that Jessie B. bought from me. Wish I had bought more too. Down to one engine with ATP swingvalve now. The later cast ones could have used a quick trip on the Bridgeport to make areas where bolts attach flat.
    Todd

  6. #6
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    Re: ID of lower IC hose at midpoint?

    If you get a GT turbo with their 5 bolt outlet you can use this flange


  7. #7
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by GLHNSLHT2 View Post
    If you get a GT turbo with their 5 bolt outlet you can use this flange

    I think you can still get the Ford style swing valve housing, but then you would need to modify the exhaust manifold. I would love to just bolt the one they sold on and add a custom DP. The one you have picture of looks like it would be close to the best of both worlds when it comes to external and internal gates for sure though.

  8. #8
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by cordes View Post
    I think you can still get the Ford style swing valve housing, but then you would need to modify the exhaust manifold. I would love to just bolt the one they sold on and add a custom DP. The one you have picture of looks like it would be close to the best of both worlds when it comes to external and internal gates for sure though.

    You can get the ford style and even the merc style still. I don't care for ford housings as they are almost on-center housings so the air has to turn and go one direction then go the other. Yes the flange offers both worlds with a 3" main pipe and 2" WG pipe. It's going to be fun to snake it back into the center tunnel off my TBI manifold but is doable.

  9. #9
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: ID of lower IC hose at midpoint?

    BOV's are blasphemy on factory T-II's

    Thanks
    Randy


    There is no logical reason to call an Engine a motor.

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

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    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by GLHS60 View Post
    BOV's are blasphemy on factory T-II's

    Thanks
    Randy
    No doubt, but I was surprised how eaten away the bearings were with so few miles. I'll add one that's out of the way like Todd did. Not too visible and very functional.

  11. #11
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: ID of lower IC hose at midpoint?

    I meant Chrysler determined they were totally unnecessary

    They were sold with a 5 yr warranty and few were replaced.

    Any bearing damage is completely unrelated to the lack of a BOV.

    If funny noise is the goal then a BOV is required!!

    Thanks
    Randy


    There is no logical reason to call an Engine a motor.

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

  12. #12
    turbo addict
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    Re: ID of lower IC hose at midpoint?

    Late TI, TIII, TIV, and Chrysler TC by Maserati TII all came with CBVs.

    So you can say Chrysler experimented no CBV on 87-89 TII, but had to put CBVs back into Turbo cars.

  13. #13
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by tryingbe View Post
    Late TI, TIII, TIV, and Chrysler TC by Maserati TII all came with CBVs.

    So you can say Chrysler experimented no CBV on 87-89 TII, but had to put CBVs back into Turbo cars.
    I have a Masi TC lower hose BOV setup on my 88 T2 car I just pulled apart due to rust. Not the highest flowing thing but better than nothing.

  14. #14
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: ID of lower IC hose at midpoint?

    Turbo failure rate of 87-89 T-II Turbos was the lowest ever.

    Something to consider.

    Thanks
    Randy

    Quote Originally Posted by tryingbe View Post
    Late TI, TIII, TIV, and Chrysler TC by Maserati TII all came with CBVs.

    So you can say Chrysler experimented no CBV on 87-89 TII, but had to put CBVs back into Turbo cars.


    There is no logical reason to call an Engine a motor.

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

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    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by GLHS60 View Post
    Turbo failure rate of 87-89 T-II Turbos was the lowest ever.

    Something to consider.

    Thanks
    Randy
    Do you think it's because they were larger than anything else they put on, and that kept the shaft speeds down? I'm going for a lot more than 5/50,000 out of my turbo, so I'm opting for a BOV.

  16. #16
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: ID of lower IC hose at midpoint?

    No they determined a BOV served no purpose other than noise control.

    That's why T-II's had the unique Turbo air intake hose, it absorbed noise.

    Shift recovery is worse with a BOV as it allows pressure to escape.

    Warranty was 5/50,000 very few ever failed at well over 100-200K

    BOV sellers disagree!!

    Thanks
    Randy


    There is no logical reason to call an Engine a motor.

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

  17. #17
    Hybrid booster
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    Re: ID of lower IC hose at midpoint?

    I have a BOV from an Audi, it’s attached to the stock lower IC pipe from a Turbo IV with the factory hose. Not sure what kind of boost you plan on running, but factory is always an option if you want it to look stock.

  18. #18
    turbo addict
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    Re: ID of lower IC hose at midpoint?

    Quote Originally Posted by GLHS60 View Post

    BOV sellers disagree!!

    Thanks
    Randy

    Turbonetics disagree's with you as well. They say the BOV should be mounted as close to the turbo as possible. All the SRT4 cars too as the BOV's are part of the turbo.

  19. #19
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: ID of lower IC hose at midpoint?

    I'm not trying to convince anyone only making observations.

    Wasn't Chrysler'a warranty 7 yrs back in the day??

    Very few professional race cars/teams use them.

    Of course they're not selling them.

    Does Turbonetics?

    Thanks
    Randy


    There is no logical reason to call an Engine a motor.

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

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    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: ID of lower IC hose at midpoint?

    Well, it looks like Randy will win out this time. The K&N filter I picked up was a bit too big around and the battery tray on the Lancer a bit too far into the engine bay. On the up side, my rebuilt turbo is in there and I'm about ready to fire it up for another summer. The CAI to the turbo has been revised and I now have a VNT upper IC hose which is much more appealing to look at than the previous setup.

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