BBSE question

DE80q · Post by **DE80q** » Wed Aug 05, 2015 1:26 pm

So, I was asked about making some BBSE's. Can anyone tell me how long to make them? I do not have access to any UrS inserts, or I could figure it out myself. Any insight would be much appreciated.

loxxrider · Post by **loxxrider** » Wed Aug 05, 2015 2:08 pm

What is a bbse?

DE80q · Post by **DE80q** » Wed Aug 05, 2015 2:14 pm

Big Bore Strut Extender. At least that's what I can find it being called. It's an adaptor to weld into the from B3 strut housing to run revalved UrS inserts. I think that's how it worked. Either way, it allows us small chassis guys to run the larger diameter struts up front. Mance used to make them.

PRY4SNO · Post by **PRY4SNO** » Wed Aug 05, 2015 2:47 pm

Mance didn't provide any measurements on 12v or QW?

PRY4SNO · Post by **PRY4SNO** » Wed Aug 05, 2015 3:02 pm

If my UrS4 fronts weren't destroyed in the accident this winter I'd have shipped them off for credit toward a coilover conversion.

I do have two sets of Bilstein/H&R rears tho! haha

DE80q · Post by **DE80q** » Wed Aug 05, 2015 3:07 pm

Honestly, I had no clue where to look. I'll search around more.

deaner · Post by **deaner** » Wed Aug 05, 2015 7:41 pm

If you're not in a huge hurry, I can cut the perch off one of my urs housings, hack off the top 4-6" and send it and a front urs insert out to ya. I won't be able to get to it for a week or two though. I know for sure I'd be in for a pair or two.

DE80q · Post by **DE80q** » Wed Aug 05, 2015 9:05 pm

I appreciate the offer. I think all I really need to know if the length difference between the UrS strut frknt- strut, and the B3 front strut. I have the other measurements I need.

deaner · Post by **deaner** » Wed Aug 05, 2015 9:16 pm

I'll grab some measurements and pics for ya tomorrow. I've got spare b3 stuff here to compare with.

DE80q · Post by **DE80q** » Wed Aug 05, 2015 9:29 pm

Awesome. That will help a lot.

Wheeljack · Post by **Wheeljack** » Wed Aug 05, 2015 9:53 pm

Here's some pics and info in this link:

http://forums.quattroworld.com/9080/threads/3413.phtml

DE80q · Post by **DE80q** » Wed Aug 05, 2015 10:01 pm

Thanks. I skimmed through it quickly. Ill go over it better in the morn. At work now.

deaner · Post by **deaner** » Thu Aug 06, 2015 4:21 pm

I don't have a loose B3 strut at the moment. I imagine you've got one or two kicking being as you've got a set a nekkid housings.

DE80q · Post by **DE80q** » Thu Aug 06, 2015 10:05 pm

Is that a UrS housing you are showing it stick out 7/16" from?

deaner · Post by **deaner** » Thu Aug 06, 2015 10:24 pm

Yes it is. I put that up because I couldn't find an accurate way to portray through the interwebs, the depth of the cap that screws on. Figured just showing you what sticks out would work easiest.

DE80q · Post by **DE80q** » Thu Aug 06, 2015 10:31 pm

OK, look like I have to measuring, and comparing to do. As luck would have it, I have a trashed(new) b3 bilstein port front insert. This should work well.

Will let you know what I do.e up with.

DE80q · Post by **DE80q** » Fri Aug 07, 2015 12:06 pm

So, here's something kind of interesting. The body of the B3 bilstein is 1/8" longer, but sticks out of the strut housing 1/8" less. So, to make this work correctly, I need to make the over all housings length 1/4" shorter. Hmm... I'll see what I can figure out.

Mcstiff · Post by **Mcstiff** » Sat Aug 08, 2015 10:45 pm

At some point I'll be replacing a strut in my 90 and could grab a measurement. If it helps, the length is "the same" as a urQ strut. I know this because I have a urQ strut in there now.

DE80q · Post by **DE80q** » Sun Aug 09, 2015 2:35 am

Mcstiff wrote:At some point I'll be replacing a strut in my 90 and could grab a measurement. If it helps, the length is "the same" as a urQ strut. I know this because I have a urQ strut in there now.

Interesting. Koni lists the front UrQ strut to be the same as the B3 rear strut. I have a pair of those for my coilovers, I'll have to check into this.

Thanks

DE80q · Post by **DE80q** » Fri Sep 04, 2015 10:47 am

So its been a while, but thanks to deaner, I have a pair of B3 front housings, and a well blown UrS bilstein. I needed the housings as a sacrificial offering to the Audi gods to allow me to get the sizes I needed. And here is the result

When I cut off the same 50mm length off of the B3 strut housing, this is how it looked with the UrS bilstein insert.

A little too tall. I cut another 3/8" off the strut housing, and all was good. I got the 7/16" stick out I needed as per the UrS housing. I'm going to check the housing against a B3 rear(aka UrQ front) koni insert, and see what needs to be changed. I'm thinking I may need to make a change to them to use the koni inserts. I know the koni inserts use a spacer not only for alignment, but its also what the gland nut pushes on to keep the insert down.

90quattrocoupe · Post by **90quattrocoupe** » Fri Sep 04, 2015 10:56 am

Nice work

DE80q · Post by **DE80q** » Fri Sep 04, 2015 11:01 am

Thanks, they are not very complicated, just semi time consuming without the correct tubing. My plan is to order tubing with the ID and OD much closer to the finish sizes.

I also think I may need to shorten the BBSE, so that they can be run with the factory spring perch if so desired.

DE80q · Post by **DE80q** » Wed Sep 16, 2015 3:32 am

So here is the final product. Came out well, I just need to reblast, and paint them before shipping them back to their home.

deaner · Post by **deaner** » Wed Sep 16, 2015 10:15 am

Nice! Looks great! Im stoked to get these things together! I got your text BTW, no cell service in the house and I'm chasing kids around so I can't go outside to text ya back haha. Effing iPhone.... I ordered up a set of CompBrakes 3 piece solid mounts so I'm curious to see how those work out too.

Thanks Dave!

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