M20B29 w/ Triple Webers into my '71 2002

[AceAndrew777]

reminds me of M12 cylinder heads.

You know, I've wondered that as well. Would be interesting to know for sure.

In the interest of another little father/son(s) project, I had my older two boys help design/make a little mounting bracket for the Vibrant vacuum manifold. Straight forward project, so perfect learning opportunity for them. Used the alodine again. Here you can see the difference in finish on a cast vs/ machined surface.

IMG-3797 by Adams Autosport, on Flickr

IMG-3798 by Adams Autosport, on Flickr

IMG-3804 by Adams Autosport, on Flickr

IMG-3808 by Adams Autosport, on Flickr

[kronus]

reminds me of M12 cylinder heads.

[AceAndrew777]

Something quick.

Another excuse to implement a little astro/aero manufacturing goodness into the car. This is alodine/chemfilm/bonderite, it's a chemical conversion process used when the aluminum/titanium piece is too big to be anodized or has clearance tolerances tighter than what can be done through anodizing.

Not typically used on castings, but I had two hours this weekend and wanted to give it a go. Leaves a neat slightly-iridescent gold finish (unless you leave it in the bath too long, then it's a pasty dark yellow). Not the strongest corrosion resistance, but far better than nothing.

Surface prep is key, anything but a water break free finish will result in blotches.

Also, this stuff is toxic and not to be taken lightly. Handle with care and have proper storage planned ahead of time.

EDIT: Thank you to Shant/Bimmerheads for the chopped 200 head so I could use it for mocking things up.

IMG-3760 by Adams Autosport, on Flickr

IMG-3761 by Adams Autosport, on Flickr

IMG-3763 by Adams Autosport, on Flickr

IMG-3767 by Adams Autosport, on Flickr

IMG-3765 by Adams Autosport, on Flickr

[AceAndrew777]

sheesh

Just thankful my parts worked, haha.

Your wiring is awesome. That's my next and last major project, other than trim bits. Therefore I'm taking a lot of inspiration to how organized your setup is (any excuse to use Kapton Tape), will be asking you some questions.


The car is now back home.
-E30 driveshaft measurement finalized and sent off for shortening/rebuild.
-Using left over titanium tubing for coolant overflow tank and catch can, extra hardware inbound.

[Sh3rpak!ng]

sheesh I've been away from r3v for too long. Seems there've been some good updates I'm missing. I'll have to check back when I can see the photos. Currently on a plane with wifi that blocks many media sites.

andrew congrats on the note about working on james webb, I've been mind blown over the images coming out. it's so inspirational. happy to see progress here. can't wait to see this in person some day soon!!

[LateFan]

That 412 is crazy - like a wail with a shriek above it.

I always think of great engines as musical instruments - after all, all they do is move air though. The combustion and the exhaust valve opening is the buzzing of the trumpet players lips, then the rest is plumbing, length, resonance, pitch, materials, tone, etc. What a trumpet can't do is that fantastic intake wail of good engines. (maybe that's the guy breathing in...??)

[AceAndrew777]

It's a mix of art and science ... so it could backfire!

As described to me by one of the guys who helped...it's a sound wave, so the shorter the wave, the higher the pitch. Picture physical components that would encourage that shorter wave while discouraging the longer wave. I told him it couldn't be that easy .... but the guy has his physics doctorate and designs satellite wave guides, so who am I to argue. I did do some math, but frankly I couldn't find anything that would help simulate all of the variables... more time/money than my paygrade.

Generalities:
1) longer looping primaries (you can see a similarity between this header and that of the Ferrari 412 T2 3.0L V12).
2) cross over and/or collector as close to the end of the primaries as possible.
3) sharp bend close after the collector.



EDIT: Latefan, the Volvo and square tail 02 are two of Drago's cars. He has big plans, but time is an issue. Love the Nascar crossover video. Here's the sound of that Ferrari 412 T2... https://www.youtube.com/watch?v=5SoZiTxdQyw&t=62s

EDIT: Simon, ok. Let's talk a little more soon. I have some friends in Paso Robles, and we were thinking of staying there, then driving the fun road to Monterey.

[LateFan]

This reminds me of a video I saw about a stock car with a high pitched wail at Daytona. The Morgan-McClure 1995 Chevy with a unique crossover pipe configuration. Actually pretty interesting for a motor nerd like me......

https://www.youtube.com/watch?v=4EtSA1TocZg

[2mAn]

Omg pleeease teach me and tell me where I would learn the most about how to achieve a higher pitched exhaust system! I've always wanted to learn this. The resources I've looked at usually don't get that specific. Or it goes crazy into math. How did you learn about exhaust design to get the results to want?

x2 Let us know when class is in session!

[Chilezen]

Drago and I wanted to do something interesting for the headers to go along with the goal of having a higher pitch sound. To coax out the higher frequencies there are some generous loops, we also added a crossover (not enough room for a true 6-into-1, and lastly a fairly sharp bend at the bottom. Hopefully it works, but given it's an experiment there's always the chance it'll flop! While the car was there, he ended up using it as the basis for some new Koogleworks offerings. Love this community.

Omg pleeease teach me and tell me where I would learn the most about how to achieve a higher pitched exhaust system! I've always wanted to learn this. The resources I've looked at usually don't get that specific. Or it goes crazy into math. How did you learn about exhaust design to get the results to want?

[2mAn]

Hope so! Really wanting to do Monterey finally, you going?

It’s always something I want to do. Hoping to bring the Alfa up this year too. Goal is to have the 2L in and running strong by then

[LateFan]

Info on the bad boy Volvo Amazon please? (Post 500)

[AceAndrew777]

Hope so! Really wanting to do Monterey finally, you going?

[2mAn]

Those sounds will be glorious!

[AceAndrew777]

Curious to know how the tube from the crank case sits into those ITBs? Or is it possible to block off that passage. I have the RHD set and it's most just set in place but not extremely snug.

Similar to stock and RHD, sprung loaded into position. It feels pretty snug, but I could run a stiffer spring as well.

I loaded up the titanium tubing into a box and Andrew (IE) was kind enough to stop by during finals week to tow the car up to Drago's shop.

It's absolutely crazy how light the titanium is. I can hold the exhaust system with my pinky.


IMG_2333 by Adams Autosport, on Flickr


Drago and I wanted to do something interesting for the headers to go along with the goal of having a higher pitch sound. To coax out the higher frequencies there are some generous loops, we also added a crossover (not enough room for a true 6-into-1, and lastly a fairly sharp bend at the bottom. Hopefully it works, but given it's an experiment there's always the chance it'll flop! While the car was there, he ended up using it as the basis for some new Koogleworks offerings. Love this community.


IMG_2408 by Adams Autosport, on Flickr


(don't mind the scrap red valve cover), ended up looking like some of the hakosuka headers!


IMG_1732 by Adams Autosport, on Flickr


Once it was wrapped up, we rolled the car up the street to IE. Fun to see it back on the lift where I did the initial tear down in 2016!


IMG_2417 by Adams Autosport, on Flickr