Topic: Delkevic Exhaust Fitment issue

[flybox1]

If you've snugged your head pipes down to seal-crush the copper washers, there is little if no wiggle room a the @$$ end.

IIWM, id just get the headers started on the studs, only held on loosely with the needed washers and nuts, and then find the best-fit for the exhaust and its bracket.
Once in place, start snugging things up.  You'll still have room at the headers to get a good seal

[700504]

If you've snugged your head pipes down to seal-crush the copper washers, there is little if no wiggle room a the @$$ end.

IIWM, id just get the headers started on the studs, only held on loosely with the needed washers and nuts, and then find the best-fit for the exhaust and its bracket.
Once in place, start snugging things up.  You'll still have room at the headers to get a good seal

I had problems with mine until I figured this out lol, moveable parts need to move until everything is installed and then torqued all together.

[700504]

Dont know if it helps, but here's mine. Also as a side note; they sent me two different brackets, extra spacers, bolts and side stand rubbers. Mine is a 77 cb750f.

[Ericcb750]

Thanks to everyone for their advice and photos... so last night I took everything completely apart and left the head pipes loose ,  nuts wee on just a couple threads  to make sure the collector was for properly... the muffler does fit a bit better but the mounting bracjetbi have is 100% incorrect... from the way things look now if I had one that came straight down as opposed to an angled one it may work... waiting to hear back from delkevic about getting a new mounting bracket...

It does line up a bit better but honestly seems really low , like it should have a much higher angle towards the rear wheel ...

The muffler is completely straight so unfortunately turning it doesn't change its orientation on the collector... these photos are with everything tightened at the head so there is literally no movement at this point...

Thanks again for everyone's help...

[Ericcb750]

If anyone has a picture of the mounting bracket they were able to use I would love to see what it looks like compared to mine... even with the spacers since this one is angled pretty severely there is no way it would mount on the foot peg bracket...

I really like the pipe and have heard sound clips which sound amazing so I'm hoping this can be figured out... also anyone with the megaphone style muffler, does the muffler have any bend in it or is it 100% straight like the one in my photos?

[drumstyx]

Me and 700504 up there have the longer full-size muffler, so it might not apply the same, but you'll see the same bracket in his pic that was in mine -- it's basically a flat sheet, as it only has a *slight* offset

[Jerry Rxman Griffin aka MuthaF'er]

Thanks to everyone for their advice and photos... so last night I took everything completely apart and left the head pipes loose ,  nuts wee on just a couple threads  to make sure the collector was for properly... the muffler does fit a bit better but the mounting bracjetbi have is 100% incorrect... from the way things look now if I had one that came straight down as opposed to an angled one it may work... waiting to hear back from delkevic about getting a new mounting bracket...

It does line up a bit better but honestly seems really low , like it should have a much higher angle towards the rear wheel ...

The muffler is completely straight so unfortunately turning it doesn't change its orientation on the collector... these photos are with everything tightened at the head so there is literally no movement at this point...

Thanks again for everyone's help...

Hey guys,

In Eric's post, third/bottom picture, triangular mount/center stand stop, has anyone used this piece and how did you use it? Looks like it would mount to the muffler if the spacing of the holes matches ?? and behind the foot peg bolt or the bolt in front of that on the 75/76 F that also holds the front muffler bracket bolt. This #$%* is hard to explain LOL 

[evanphi]

Thanks to everyone for their advice and photos... so last night I took everything completely apart and left the head pipes loose ,  nuts wee on just a couple threads  to make sure the collector was for properly... the muffler does fit a bit better but the mounting bracjetbi have is 100% incorrect... from the way things look now if I had one that came straight down as opposed to an angled one it may work... waiting to hear back from delkevic about getting a new mounting bracket...

It does line up a bit better but honestly seems really low , like it should have a much higher angle towards the rear wheel ...

The muffler is completely straight so unfortunately turning it doesn't change its orientation on the collector... these photos are with everything tightened at the head so there is literally no movement at this point...

Thanks again for everyone's help...

Hey guys,

In Eric's post, third/bottom picture, triangular mount/center stand stop, has anyone used this piece and how did you use it? Looks like it would mount to the muffler if the spacing of the holes matches ?? and behind the foot peg bolt or the bolt in front of that on the 75/76 F that also holds the front muffler bracket bolt. This #$%* is hard to explain LOL 

That mount is used by Dino in his Hackaweek build, but he uses the megaphone muffler.

I also got one with my headers. I tried using it just for the center stand stop but it didn't look great.

[Ericcb750]

The Main reason i feel that the bend in the collector is off or something....My muffler is literally parallel with the ground and will get scraped .... Every other one of these pipes I've seen the muffler generally points upwards toward the middle of the rear wheel..... Mine is about parallel with the ground and the swingarm...i got this along with Jerry a long time ago so i'm wondering if something has changed between then and now?

[Jerry Rxman Griffin aka MuthaF'er]

Does the other original muffler have a bend near the collector or is it also straight there?

[Ericcb750]

Hey Jerry, The muffler is 100% straight, no bend in it at all, I did hold up a Kerker Muffler (the standard type) which has a bend in it and it fits the bike perfectly... The main issue i I wanted to keep my center stand on it.... For a while I've run an F model header with a cone eng. quiet core muffler and i had to remove the center stand so it didn't hit the chain.....

But regarding your question, no there is no bend at all in the muffler....If there was a slight bend in it, it would be perfect.... The way it is now, it's going to scrape on the ground.

[Jerry Rxman Griffin aka MuthaF'er]

I was trying to ask about the 'other' original muffler not the straight short one but didn't know what to call it LOL. Any input from those that have the other longer muffler??

I also recently slipped my Kerker on mine. Fits great and looks great but I have an almost new Kerker it goes to so I have to find something else. Guess I could see how my Mac looks and fits. I will have more upcoming time to play motorcycle soon. I ordered carpet for my basement finish project so I'm almost done with that. Gotta get off the morning computer duties and go spray paint the doors. 

[Ericcb750]

I'm also curious to know if the Megaphone "larger" muffler is 100% straight or if there is a little bit of an offset to it?

Also , I heard back from Delkevic and they're going to provide another bracket to try.... Hopefully it works, I'm still skeptical about way this pipe is angled though...all the photos/videos that i've seen the pipe seems to angle upward toward the middle of the rear tire..... Like towards the center of the drum.... mine is nowhere near that, it's parallel with the swingarm except about 5 inches below it ....

[flybox1]

I'm also curious to know if the Megaphone "larger" muffler is 100% straight or if there is a little bit of an offset to it?

Also , I heard back from Delkevic and they're going to provide another bracket to try.... Hopefully it works, I'm still skeptical about way this pipe is angled though...all the photos/videos that i've seen the pipe seems to angle upward toward the middle of the rear tire..... Like towards the center of the drum.... mine is nowhere near that, it's parallel with the swingarm except about 5 inches below it ....

...this is why I think your collector was not numbered correctly. The collector/mid-pipe should be angled upward more

[Jerry Rxman Griffin aka MuthaF'er]

Just looked at mine on the center stand without a muffler. It IS angled upward. I think Fly is onto something perhaps unless the pipes are not installed flush/squared with the exhaust ports. Send me your phone number and I can text you a pic or two without a muffler and then slip the Kerker on it.

[Ericcb750]

I checked and unfortunately if I turned the collector one pipe to the right or to the left it would run into the frame, aslo would have issues wit hthe spring tabs that they welded in only those two spots...

I know it seems crazy but I think this collector (the elbow portion) was somehow welded at an incorrect angle when it was put together.... Because there are the 4 pieces that the headpipes go into (all welded together) and then the "elbow/link pipe" is welded to those, The way it is oriented is wrong.... i've tried telling the woman there this but i'm going to have to talk to someone else over there....

There's really no other explanation, that's the only piece that is 100% fixed.... the headpipes are mounted into the collector correctly and at the heads and tightened and it's still off...

I appreciate your guys help with this.... I've asked her about 5 times to sell me another collector and she keeps mentioning the bracket.....

[Ericcb750]

Hey Fly, I'm going to try that just for grins to see if that works...it's just tricky the way the little mounts for the springs are on two specific sides....but this would help prove my point if it works.... I feel like an whacko because everyone else's seems to work but I just can't get this thing right....

[flybox1]

Keep us posted.
if sitting at the back of the bike, facing the end of the pipe, rotate that collector/mid pipe 90 deg clockwise and slide it on the headers.
(forget about the spring attachments and numbers for the moment)
If the angle works, they effed up in the making of it 

[Ericcb750]

Hey Guys!! UPDATE!! So after a ridiculous amount of back and forth with Delkevic, I finally got them to listen to me and send me a new collector/head pipes.... I'll be sending the old ones back. So at first glance I could tell immediately this collector is much different than the one they originally sent me... i knew it was screwed up.

I think Jerry was the first to get this system for the later SOHC 750 and I bought one pretty much right after him, The woman i spoke to (who helped me buy the first one) said they have now come along way with the fitment of these. Going to get this mounted up and see...fingers crossed but this one is much better looking. I'll post some side by sides...

Thanks guys, just wanted to make sure i followed up on this in case someone else has a similar issue. I legit thought I was losing my mind for a while....

[Ericcb750]

Here we are

[Ericcb750]

Top Photo, The one on the right is the first one I received.

Middle and BOttom, The first one is on the left. Look at how the collector is not welded straight onto the elbow, and also the orientation of the bend and the angle at which the muffler would attach is different enough for none of these brackets to work and for the muffler to be about parallel with the ground.

I knew this first one was messed up.

[flybox1]

Yeah.   thanks for following up.
Be sure to send your photos to Delkevic so they have documentation of the issue, as you cant be the only one going thru this....

[Jerry Rxman Griffin aka MuthaF'er]

Looking forward to your report. I need to add a muffler to mine but it just sounds sooooo damn good with those 1000cc's exiting that open collector 

Thanks for doing the leg work. It'll save me the hassle.   

[Ericcb750]

I'll make sure to post an update when i get it all fitted up but i'm really thinking this one will work. If anyone else runs into the same / similar issue, please let me know. Thanks for all the help from everyone with Pictures, info, and different methods....i appreciate it! Take it easy, I'll get the other photos up soon

[el pachuco]

Update?