Building Custom Exhaust for Honda CB400 Cafe Racer

[@leslieaustin151]

I am VERY impressed with your welded joints on the exhaust, your “positioner” and all the ‘accessories’ you used did a really good job. Very impressed. I might have to copy that design! Thank you. Now to find and watch the positioner video! Les

[@kihestad]

Glad to hear that! I have used it on several occations it works quite well!

[@ro9ode]

Nice welding

[@kihestad]

Thanks :-)

[@physicsguybrian]

It will be interesting to see how much the changed pipe curvature effects the engine. You've gone to a much tighter radius and that *may* introduce pressure reflections back into the engine exhaust port. Would like to hear it in action! Nice welding work!

[@kihestad]

Yes, agree. It's a bit of an experiment 😊 I have kept the 'original aftermarket' exhaust and will try to compare them, both sound level and performance (not quite sure how to measure the performance, but will at least try... 🥴)

[@madcat4563]

Wow, those are some nice-looking welds on the down pipes. Many people like the fusion weld look that you get on stainless steel exhaust and intake systems. But unpopular opinion, but I don't like the look. The weld you made looks aesthetically pleasing for the build. And it didn't get the same reaction as fusion welding for me.😅🤔👍

[@kihestad]

Thanks 🙂 I think it is most common to use TIG when welding exhaust pipes. I don't have a TIG welding machine (yet), and used my MIG welder. I did not use stainless steel for this exhaust (it's too expensive for this budget build). Different welder and steel leaves a different result, and I also removed the bluish discoloration using a rubbing pad to get a more uniform end result. I will have to rust protect it anyway using heat resistant primer and paint. Glad you liked the end result 👍

[@pereklund5623]

Pär igen. Nu har jag inte bara en cb250 utan kom också över en cb 400n-83. Jag tycker att ditt avgassystem blir riktigt bra. Jag såg att du hade ett 2-1 med mitt tycke också alltför långt avgassystem. Däremot tyckte jag att dina gamla rör fram till ljuddämparen var helt ok. Jag tänkte höra ifall du vill sälja dina 2-1 rör. Allt gott, Pär

[@kihestad]

Hej, det er en annen seer som også har spurt om å få kjøpe det gamle exos-anlegget 😊 Jeg vil ikke selge noe riktig enda, før jeg er sikker på at det nye fungerer.

[@pereklund5623]

Pär igen, nu såg jag att förgreningen inte var gjord av avgaskrökarna utan i ljuddämparen. Allt gott, Pär

[@kihestad]

Det er rett, så kan være problematisk å kombinere med annen muffler. Den andre som var interessert var på jakt etter komplett 2-1 motad anlegg.

[@laszlojakobovics5641]

I would like your motad silencer buy.

[@kihestad]

ahh, this seems to be a duplicate... Google has had problem latest days with comments - they are coming and going... anyway - I'll repeat the answer here: Hi, you are the third one wanting to buy it 😊 Before I decide what to do with it I want to make sure that my self made exhaust is working properly and measure sound level by comparing the two exhaust. I hope to be done in a couple of month, and then make a video where I try to figure out what to do with the remaining parts. Stay tuned!

[@laszlojakobovics5641]

I would like your Motad silencer buy, please answer. Laci

[@kihestad]

Hi, you are the third one wanting to buy it 😊 Before I decide what to do with it I want to make sure that my self made exhaust is working properly and measure sound level by comparing the two exhaust. I hope to be done in a couple of months. I will then make a video where I share what I will do with the remaining parts. Stay tuned!

[@laszlojakobovics5641]

Szuper, thanks. L.

[@andyspencer6308]

@@kihestad You should do a giveaway 🙂👍🏼

[@kihestad]

@@andyspencer6308 I might just do that Andy 😊 I have already given away the seat and one of the side covers to Ryan at the YT-channel: Ryan's garage. Good idea! Thanks for or the tips 😊

[@DudesatRC]

Hej vilken svets använder du? Märke alt länk? Tack för en bra kanal!

[@kihestad]

Takker 😊 Jeg har en gammel Biltema MIG (med argon-mix gas), den finns ikke lengre.

[@kihestad]

Tok en sjekk i garasjen, den heter MIG160 (varenr: 17175).

[@DudesatRC]

Ok tack

[@docvladimir]

Nice job with the Vlog you're doing! Is the CB400 the 27 or 42HP?

[@kihestad]

Thanks! 🙂 It's the 45HP

[@kihestad]

...or maybe it is 42HP

[@kihestad]

Had to check it: 32 KW (44 HP)

[@docvladimir]

You got a good one! A lot of them were made in Germany and were limited to 27hp through the camshaft

[@kihestad]

Ahh, I did not know about that. 27HP on this bike? The weight is around 200kg if I remember correct, it just makes no sense... :-P