Results 1 to 8 of 8

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Join Date
    Jun 2006
    Location
    Helsingborg/Sweden
    Posts
    202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Default When the engine is out, what should you replace/upgrade?

    I've been told that this is what you should replace when the engine is out, since it is a nightmare to do it otherwise if they break:

    - Knock sensor
    - Ignition coils

    I consider upgraded head gasket and head bolts (1,5 bar boost / 325 hp), but have no good motivation since I haven't had any problems with them. Pistons will be replaced, but what about connecting rods?

    Anything else?
    -
    155 Q4 -96 (Alfa Rosso 130)
    Giulietta ti -59 (.. will be "Aqua di fonte" blue/grey)
    Giulia 1600 Sprint -62 (.. will be dark grey)
    Stelvio 2.2 Q4 (Trofeo white)
    Fiat 500 TwinAir -11 ("Baby blue")
    Lotus Evora S -11 (Laser blue)

  2. #2
    Join Date
    Feb 2008
    Location
    Hungary
    Posts
    85
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    1

    Default

    Last year when the clutch was changed we planned to take the engine out, but the the guys at the workshop (?) has done the clutch change without the engine work, so it was an easier job in the end
    Nevetherless they still removed and sent the steering rack to a refurbish company and completely dismantled the transmission and central diff. Bear in mind the guy who done the later is a transmission expert, our Q4 requires a veteran for that
    1995 Alfa Romeo 155 Q4 , 1995 cc Standard Standard Black

  3. #3
    Join Date
    Jun 2006
    Location
    Helsingborg/Sweden
    Posts
    202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Default

    Ooooh. That was an advice that really took the breath out of me ... Mine has done just under 100.000 km, so I suppose it is kind of low mileage, it has done two transmission oil changes and been standing since January 2009. 5:th gear has been changed as well once, for a longer one. But I am curious, what did steering rack and transmission components look like? Were they worn? Did it improve feeling, sound/noise, or anything after the overhaul? In any case, it are quite big jobs to do - all respect to your workshop!
    Last edited by #84; 06-08-18 at 22:56.
    -
    155 Q4 -96 (Alfa Rosso 130)
    Giulietta ti -59 (.. will be "Aqua di fonte" blue/grey)
    Giulia 1600 Sprint -62 (.. will be dark grey)
    Stelvio 2.2 Q4 (Trofeo white)
    Fiat 500 TwinAir -11 ("Baby blue")
    Lotus Evora S -11 (Laser blue)

  4. #4
    Join Date
    Feb 2008
    Location
    Hungary
    Posts
    85
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    1

    Default

    The steering rack was leaking oil since years, very small amount but still leaking and I had to refill the steering servo oil from time to time but otherwise it was ok. During the refurbish they changed all the bits and peaces apart from the original housing and rack. Since there wasnt any big knocking sound issue before I do not feel or hear any major improvement, apart from that I dont have to refill the servo oil

    The transmission got a humming noise whenever the car was in gear and I did not accelerated so we wanted check that. During the oil change we saw too many metal pieces in the worn oil, which isnt the best thing so the oil change quickly expanded to a transmission inspection after dismantling. Since our transmission is built in with the central diff it was as pretty big job and if I remember correctly some bearings and maybe a gear had to change. It works much quieter now!

    All in all the car was in the workshop for almost a month, in the "project-car" garage, so it wont interfere the daily jobs and the guys who worked on it were given a bottle of fine whiskey, each 'cause it was indeed a big project
    1995 Alfa Romeo 155 Q4 , 1995 cc Standard Standard Black

  5. #5
    Join Date
    Sep 2018
    Location
    Austin, TX
    Posts
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Default

    I can see why the guys were rewarded with a bottle of fine whiskey. Stuff like that almost falls under the labor of love category.

  6. #6
    Join Date
    Jun 2006
    Location
    Helsingborg/Sweden
    Posts
    202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Unhappy

    Sometimes the most important you can do to yourself is to ask yourself the right questions. So, with that said, I discovered one VERY important component that more or less had failed completely without any visible or audible signs. One of the balance shaft (countershafts) bearings. We had started re-assembly of the engine and since I had ordered all gaskets/rotary sealings I decided to remove the balancer shafts as well, even though there was no direct need. In the rear end there is a rubber coated steel plug sealing of the balancer shaft bore. When removing one of them, the fluid that came out was more water like than oil like and the bearing (which is rubber sealed in the outer face) sounded like a pepper mill while rotating it slowly with my fingers.

    So, these bearing are very cheap and the consequence if any of them seizes might be disastrous, so I recommend anyone doing a serious overhaul to replace them.

    How to remove the rubber coated steel plug? Punch a hole in the middle with a sharp object and then drive a sheet metal, or wood, screw 5 mm in through it. Use a carpenter hammer, or similar, to pull out the screw - and the plug with it.
    Last edited by #84; 17-11-18 at 20:50.
    -
    155 Q4 -96 (Alfa Rosso 130)
    Giulietta ti -59 (.. will be "Aqua di fonte" blue/grey)
    Giulia 1600 Sprint -62 (.. will be dark grey)
    Stelvio 2.2 Q4 (Trofeo white)
    Fiat 500 TwinAir -11 ("Baby blue")
    Lotus Evora S -11 (Laser blue)

  7. #7
    Join Date
    Jan 2007
    Location
    Derbyshire, UK
    Posts
    3,069
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Default

    Hose of death....the coolant hose at the back of the engine. Pain the RS to replace in situ and even then it'll leak!

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

  8. #8
    Join Date
    Jun 2006
    Location
    Helsingborg/Sweden
    Posts
    202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Default

    Hmm, water leaks is the only problem I have not had .. but let's check
    -
    155 Q4 -96 (Alfa Rosso 130)
    Giulietta ti -59 (.. will be "Aqua di fonte" blue/grey)
    Giulia 1600 Sprint -62 (.. will be dark grey)
    Stelvio 2.2 Q4 (Trofeo white)
    Fiat 500 TwinAir -11 ("Baby blue")
    Lotus Evora S -11 (Laser blue)

Similar Threads

  1. Brake upgrade Q4
    By nick in forum Alfa Romeo Q4 Tech.
    Replies: 37
    Last Post: 31-05-18, 16:34
  2. Forum Upgrade.
    By Steve Webb in forum The Mechanics rest.
    Replies: 25
    Last Post: 14-07-17, 09:59
  3. rear brake upgrade
    By na15575 in forum Alfa Romeo Q4 Tech.
    Replies: 2
    Last Post: 14-09-09, 21:06
  4. DIY turbo upgrade?
    By wrinx in forum Alfa Romeo Q4 Tech.
    Replies: 2
    Last Post: 25-12-08, 12:20
  5. Extreme big brake upgrade.
    By Steve Webb in forum The Media Suite
    Replies: 4
    Last Post: 23-02-08, 01:39

Bookmarks

Posting Permissions

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