what Bolts with aftermarket downpipe ?
#1
what Bolts with aftermarket downpipe ?
Ok sorry for making another thread, but what bolts do you guys use with stock O2 and aftermarket Downpipes ? The stock bols come with the springs, but they don't work with aftermarket downpipes. Do you just install regular bolts without the springs ?
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Originally Posted by kirk@WORKS
You may want to contact that manufacturer. A well designed DP should accomodate the factory springs which are vital for flex and long term fitment.
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The "spring loaded" bolt set up is a life saver for the exhaust. It can move slightly to "adjust" for slight impacts caused by our wonderful roads here. without them you will fight leaks non stop.
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Originally Posted by nlped
The "spring loaded" bolt set up is a life saver for the exhaust. It can move slightly to "adjust" for slight impacts caused by our wonderful roads here. without them you will fight leaks non stop.
As for the grade of the bolt, if you're not sure a higher grade shouldn't hurt. Can't remember US grades off hand, but ISO it would be 10.9 just to be safe. I don't think the stock is anything special.
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#8
I have RnR flex downpipe. Stock Bolts would not fit through the holes, because in the middle of the bolt there was a built in spacer, that would not go through the hole. I just bought a Dremel and shaved them just enough to go through the hole. This way I was able to keep the stock springs. It took me some time, but the sucker is in, looks and sounds great. So far happy
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Interesting concepts.
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
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Originally Posted by davidbuschur
Interesting concepts.
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
I'm not being a smart **** here, just trying to clarify why the stock comes with all those bits when it appears that some can do without.
Last edited by x838nwy; Jan 14, 2006 at 08:20 PM. Reason: adding qualifier
#12
well I received 5 bolts with the TBE, I guess 1 was missing. This is the first time I was installing an exhaust. Although 3 of the bolts would fit with donwpipe connection, I used 2 of them to connect the test pipe, and for some reason thought that I MUST use stock spring-bolts. It didn't come to my mind that since I have a flex downpipe I don't have to use the springs anymore. Ehh when I install O2, I might go with regular bolts.
heres the picture
![](http://img71.imageshack.us/img71/4294/58iu.jpg)
heres the picture
![](http://img71.imageshack.us/img71/4294/58iu.jpg)
Originally Posted by davidbuschur
Interesting concepts.
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
I've been building exhausts for the DSM's/EVO's now for a good 12 years. I haven't seen these failures that are being referred to from not having spring bolts are flexes. Interesting though
![Wink](https://www.evolutionm.net/forums/images/smilies/wink.gif)
We don't use a flex or factory spring bolts in ours. We do supply the downpipe with new bolts/washers for the install though. Are you sure the bolts didn't come with the downpipe you bought and aren't in the packing material from RNR?
David Buschur
www.buschurracing.com
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