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Hey All,
I'm reasonably new to the Alfa world.
I am doing some work to my Boxer 33 1.7
The front shocks are totally cactus...I thought i would look at replacing all 4 as the right rear is knocking slightly too.
I am currently looking into availability of brands and fittings of suspension.

I obviously want this thing to handle..i have fitted 16" mags ( the cart before the horse) but looking to do the shockers at the same sort of time...to see marked improvement.

I would love any suggestions on what is the best for my car
90 model 33 boxer 1.7
all opinions welcome;) thanks

heaps for any help.

J:D
 

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Hey All,
I'm reasonably new to the Alfa world.
I am doing some work to my Boxer 33 1.7
The front shocks are totally cactus...I thought i would look at replacing all 4 as the right rear is knocking slightly too.
I am currently looking into availability of brands and fittings of suspension.

I obviously want this thing to handle..i have fitted 16" mags ( the cart before the horse) but looking to do the shockers at the same sort of time...to see marked improvement.

I would love any suggestions on what is the best for my car
90 model 33 boxer 1.7
all opinions welcome;) thanks

heaps for any help.

J:D
Hi there! I've got a Series III 33 8v. I'm running Koni shocks all round with H&R Springs. I've also changed the bushes from the usual soft rubber compound to Polyurethane. However, I'm running mine on 15" OZ Superturismo wheels (I'm looking to change these to 15" Ronal A1 wheels when I can find them). This set up works for me. I understand that 15" wheels on these cars give you the best balance of handling and comfort. Hope that helps. Enjoy!

AL33NUT:)
 

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Hi! I'm here for the first time and immediatelly asking silly questions :) Please could you help me, I've seen that many of you have KONI on 33 905, I can't find them, only for 907. Are they on the market or is necessary to modify car or shocks?
PS: Sorry for the language, I'm still learning.
I'll be very pleased if someone answer me.
Zdeněk
 

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You have to look & see if your front struts are 3 or 4 bolt. If you have 4 bolt (like me) then these are the Koni codes you are after....


Front: 86 2448SPORT
Rear: 80 2537SPORT

do a search on the forum. the info is here somewhere.

good luck
 

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Carefull with this...
There are diferences between the front suspension of a séries 2 (905) and the 3 series (907)
The top of the piston of the shock absorber near the thread is different because the part were it seats (dont know the name in english) is different.
So if your car´s suspension is stock you can not install 907 shocks on a 905 and vice versa.
 

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Grale... Is this what you are talking about?

The tops are different sizes


Old shock:


New shock:


I'm using KYB part numbers
Left shock: 333857
Right shock: 333856
I'f you look on the KYB website these are the only two shocks available for a 33 Boxer

And as you can Imagine my life sucks right now... why is working on my Alfa 900% harder than working on any other car?
 

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Yes, thats what I´m talking about.
The shock with the dirty look is for the series 3 and works with the top with the bearing.
The other with the cleaner look is for series 1 and 2 and works with a solid top (no bearing)
On my series 3 Sportwagon I have adjustable series 2 shocks with the right top, and everything else from series 3 suspension.
 

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Thank you very much for the pictures, now it is perfectly clear.
So is actually possible to get some sport shocks (like KONI yellow or whatewer) on series 2 905? I found nothing..:confused:
 

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You have another solution for that.
Remove the original shocks from your car and send them to a shock absobers specialist and he will repair and tune them the way you ask him.
I have done that with the same results as Koni.
It will probabily costs you money, but you will have your car running the way you like.
It costed me 150 euros for the front pair.
 

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Front shocks

Hallo,
we use german Bilstein race gas shoks , absolut the best performance on road and race, but production since 1994 sold.
You can modify your higher bearing to Uniball, so its stiffer like all racecars and you can fit the struts for 907 from Koni.
Naturly the tip from Grale is also usable, if you find a company , who inserts a patrone from another car in your struts.

best regards
Uli
 

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Naturly the tip from Grale is also usable, if you find a company , who inserts a patrone from another car in your struts.
You doesn´t need to put anything from other car.
The original shocks can be opend, modified, repaired, charged with new oil, closed.
And you have new shocks the way you like.
 

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Here it is what I´m talking about.



The one on the left is a 33 series 3 Boge before tuning/repair, the one on the right is after repair.
 

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33 shoks

A Boge , if tuned or not, will never work like a Bilstein or koni !!! or why do racers use these parts. turn such parts 7 rounds on Nürburgring North, than messure temperature of shoks, you will wonder. Bilsteins are upside-down construction with a double as thick as the original pistonaxle.

Uli
 

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A Boge , if tuned or not, will never work like a Bilstein or koni !!!
Have you ever tried a Koni Sport and a tuned Boge on a Sprint or on a 33?
Dont think so...
I never tried Bilstein on Boxer engined cars so I dont know how they handle.
But I have more then one of these cars with Koni, and 1 other with these Boge, and one more with some adjustable Osrav, and I can tell you that all of them can be tuned and have almost the same handling.
The best I have are not the Koni Sport, but the Osrav.
The Konis are not modified, only tuned, the Osrav are uprated. The Boges are also uprated, and are now as good as Koni. The only diference is I can not tune them like I can tune Konis. They have to be opened to be tuned.
Every shock can be tuned/uprated. The professional can start with an std shock and when finish the only thing that is from the original is the tube. If they are good they tune/make a new shock that suits your driving style.


or why do racers use these parts. turn such parts 7 rounds on Nürburgring North, than messure temperature of shoks, you will wonder.
I dont know what racers use.
I do know that at the moment they are all the same quality, almost the same handling.
And I do know that if I messure the temperature of the shocks if I drive the same circuit with the different shock they will have the same values. If a Koni gets hot its obvious the others also will be without diferences.


Bilsteins are upside-down construction with a double as thick as the original pistonaxle.
And thats probably the main reason because they dont heat so much as the others.
But like I said I never tried Bils for Boxer cars, I even didn´t know they made them for Boxers.
 

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33 shoks

Hallo,

1. Bilstein made inserts for Sud and 33 905 in period for high performance street use, but they are long time sold out. The Bilstein are high-pressur gas filled shoks mostly in upside-down technik. These are inserts , fits in the body of the original struts.

2. You can order special made inserts after old drawing , but you had to order a minimum of 50 piece! Than you can have any loadpower for pressur and tire rates , but they are fixed, not changable.

3. Koni- shoks are only changable/to tune on the tire rate, the pressur rate is always fixed and not tunable!

4. from both companies , you can order special .custom made units, but its expensive .
Also with external oil canister fully tunable . Its only a question of price. They can make struts for small racing springs with iinternal diameter 60 mm with a thread outside for adjustable high and preload of the springs.

5. i heard from italian company " Osrav" , but never had contact , perhaps they are as good as the others?

My experiance is , that the koni double tube shoks got very hot after some rounds of racing and loose damping power radical.
There is another german company, " KW" , they are very busy in racing shoks for every kind of cars.

best regards
 

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Those Osrav that I have are for 905 series and are not inserts, the fronts are the complete shock. Compared with koni they are "the same thing" in handling. Those I have were modified (now better then Koni), and are at the moment on my 33 Sportwagon.
What can I tell you is compared with a stock 1.7 16V sedan my 33 SW has at least the same handling that the sadan has, and I´m comparing it with the Version that camed to Portugal, all 16V were the QV version with low suspension, skirts, etc. My 33 SW has normal hight Alfa springs.
For sure you are right when you say you can ask those big companies to make you some custom made units, but like you said it will costs you a lot.
What I sugest is almost the same thing. You can ask the professional to modify or to make a new unit the way you want.
There are companies here that can make a unit from scratch, everything you want, normal shock or even with external canister and tunable.
But there we go again, it will be more expensive.
The reason of this thread is to find a solution for replacing original shocks with a better unit. Koni are good street and even trackday solution, but the solution I sugested is as good as Koni, easy to make and not expensive.
 

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33 shoks

What does these adjustable osrav struts cost ? And are they with tread for adjustable spring seat?

To your question about using Koni or Boge: Koni, we tried before years , so we have the experiance and Boge we never used on racetrack, only the street version , and Boge dont modify struts in germany.

best regards
 

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I dont know what do they cost, because they came on a car that was only for parts. Then I sent to the suspension professional and they were returned restaured and uprated.
They are adjustable like koni, nothing more, nothing less.
But at the moment they are stronger then Koni

Koni, we tried before years , so we have the experiance and Boge we never used on racetrack, only the street version , and Boge dont modify struts in germany.
I know they dont.
 
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