Topic: Twin Turbo F23 Accord CD5 (Build #4) (Read 17252 times)

skaterdudz02 · « **on:** May 03, 2012, 09:34:36 PM »

So I don't post much around here, but this place is where all my boost addictions first began.

Some of you guys may remember me from the old HMT website. I've been around this site now for about 7 years so hmmm...here's what I've been working with.

Progress is moving slowly. I hope to spool these KKK's up to about 10-15lbs. I've seen them go as high as 25 so I think that number will be sufficient. This setup is pretty much an experimental setup to see if twins will work with the CD5 chassis and how it will perform boost vs. rpm since redline is around 6k, I want QUICK spool.

Here's one of my old setup's. All is pretty much the same except opted for a 57 trim turbo instead.

bigdaddyvtec · « **Reply #1 on:** May 03, 2012, 10:04:10 PM »

Was wondering what happened to your ass homo... MORE PICS!!!! NEat.

bouncinofftherevlimiter · « **Reply #2 on:** May 04, 2012, 09:54:45 AM »

With the 12cm HX35 on my slut, spool was very quick, but choked on top, but i was also revving to 8k

Looks good, post more pics!

skaterdudz02 · « **Reply #3 on:** May 12, 2012, 05:19:32 PM »

Most recent setup here. .60/.63 turbo.

NoPistons! · « **Reply #4 on:** May 12, 2012, 07:03:38 PM »

I've got my popcorn. Cool shit.

HiProfile · « **Reply #5 on:** May 12, 2012, 08:41:32 PM »

If you want quick spool, do a sequential compound setup. It builds boost faster than if you had that single small turbo alone, but can make nearly the power of the two combined.

Manifold feeds small turbo's hotside, exducer and WG feed large turbo's hotside. Air filter feeds large turbo's cold side, that compressor's outlet feeds the small turbo's compressor inlet. A rough pairing will be a turbo that would barely fall on it's face up top (by itself), and a 2nd turbo with a compressor that's 1.5-2x the size. Make that turbo's turbine as big as possible.

IIRC FreeEMS Fred has his EMS powering a j-series accord with such a setup, works tits. There is also a DSM that is making 681whp with a big 16g + 60-1 (full T4).

dvst8r · « **Reply #6 on:** May 13, 2012, 12:06:30 PM »

Quote from: HiProfile on May 12, 2012, 08:41:32 PM

...but can make nearly the power of the two combined.

The power capacity is limited to the primary turbo's capacity, how quick the system lights is based on the secondary turbo's sizing.

brine04 · « **Reply #7 on:** May 13, 2012, 05:16:26 PM »

Quote from: dvst8r on May 13, 2012, 12:06:30 PM

Quote from: HiProfile on May 12, 2012, 08:41:32 PM
...but can make nearly the power of the two combined.

The power capacity is limited to the primary turbo's capacity, how quick the system lights is based on the secondary turbo's sizing.

And for those that may get confused the primary is not the turbo bolted on the manifold, it is the larger turbo. ie. exhaust gases pass through the secondary first and then through the primary.

dvst8r · « **Reply #8 on:** May 13, 2012, 09:50:31 PM »

Quote from: brine04 on May 13, 2012, 05:16:26 PM

Quote from: dvst8r on May 13, 2012, 12:06:30 PM
Quote from: HiProfile on May 12, 2012, 08:41:32 PM
...but can make nearly the power of the two combined.

The power capacity is limited to the primary turbo's capacity, how quick the system lights is based on the secondary turbo's sizing.
And for those that may get confused the primary is not the turbo bolted on the manifold, it is the larger turbo. ie. exhaust gases pass through the secondary first and then through the primary.

Yes compressor stages are based on just that the compressor.

jabberwock · « **Reply #9 on:** May 13, 2012, 11:46:04 PM »

minus check valved leg? extra wg and boost controller for the check valve stage.

robus · « **Reply #10 on:** May 14, 2012, 04:39:00 PM »

I don't understand the need for the extra complication though, in a sequential setup both exhaust and wg from the secondary feed into the primary's turbine anyway? If wg is sized appropriately there shouldn't be a restriction.

HiProfile · « **Reply #11 on:** May 14, 2012, 06:28:09 PM »

From what I've seen, gasoline eninges use compound seq turbos a bit differently. Diesels try to get the extra boost, gasoline want the extra flow by using a larger primary. What I should have said with the max flow deal is the larger turbo makes more than it normally would since you can use such a large turbine. That DSM guy said he was looking for the largest T4 turbine he could find.

That diagram is spot on, minus the check valve. I recall someone trying that on a home made setup, and it usually stuck closed. Since you're dealing with compressed air through the small turbo, you can basicly pass much more air through it when the large turbo is at 1 Bar of boost.

The key on a gasoline engine is to keep restriction down. Diesels are okay since they are used to high backpressure (drive pressure). THe thing about the WG sizing is that it should be sized for very low boost, since there won't me as high a pressure drop, and therefore it doesn't want to move as much air.

crxn · « **Reply #12 on:** May 14, 2012, 09:56:19 PM »

interesting setup, like the posted chart. dont think ive seen this type of twin turbo setup on a honda before.

jabberwock · « **Reply #13 on:** May 14, 2012, 10:03:04 PM »

I should do it with my 14b and a Holset or maybe something smaller.. rhb5

dvst8r · « **Reply #14 on:** May 14, 2012, 10:27:22 PM »

Quote from: crxn on May 14, 2012, 09:56:19 PM

interesting setup, like the posted chart. dont think ive seen this type of twin turbo setup on a honda before.

Stopping being a post whore nigger, and go do an intro post.

jabberwock · « **Reply #15 on:** May 15, 2012, 11:18:43 PM »

http://www.competitiondiesel.com/forums/showthread.php?t=79898

bwaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Gold DA9 · « **Reply #16 on:** May 24, 2012, 07:24:45 AM »

Do like

skaterdudz02 · « **Reply #17 on:** May 24, 2012, 07:25:19 PM »

I've made some more progress just haven't had time to get the camera charged up.

Everything is pretty much welded shut, I'm just fabricating the exhaust side now. From the looks of things I'll have enough room to retain my A/C on this project.

Pics tomorrow.

boosted 00 black si · « **Reply #18 on:** May 24, 2012, 07:27:09 PM »

hurry up

jdmhatchracer94 · « **Reply #19 on:** May 26, 2012, 01:41:26 AM »

still waiting

skaterdudz02 · « **Reply #20 on:** May 26, 2012, 07:57:17 AM »

Two words:

NOT HAPPY.

May have to cut my 2 to 1 collector off and re-fab that area again. I bent it too much. Causing the rest of the bends to not line up at the turbo outlets. See pics.

Teg2boo · « **Reply #21 on:** May 26, 2012, 09:20:00 AM »

Do I see turbos welded directly to the manifold? That's pimp

bigdaddyvtec · « **Reply #22 on:** May 26, 2012, 10:14:25 AM »

oh my fuck.

SOOOOO much Mig madness. I likeeeee it

DasPoop · « **Reply #23 on:** June 13, 2012, 10:04:54 PM »

That is going to sound wicked. This will be cool.

skaterdudz02 · « **Reply #24 on:** June 15, 2012, 07:14:06 PM »

Haven't much time to get this thing rolling in the shop. We've been busy with crap. I've been contemplating just running two separate exhausts and looping it further back by the axles or so...

Should have some work done by next week.

skaterdudz02 · « **Reply #25 on:** June 28, 2012, 09:34:13 PM »

ROUND 2:

HiProfile · « **Reply #26 on:** June 30, 2012, 11:44:24 PM »

Merging under the motor makes more sense anyways. It's all straight, and you get a bit more room in the exhaust. I'd recommend cutting it where the tape is and putting flanges there. That would be a bitch to stuff into a car as one rigid piece from the head to the cat.

skaterdudz02 · « **Reply #27 on:** July 01, 2012, 10:42:40 AM »

Quote from: HiProfile on June 30, 2012, 11:44:24 PM

Merging under the motor makes more sense anyways. It's all straight, and you get a bit more room in the exhaust. I'd recommend cutting it where the tape is and putting flanges there. That would be a bitch to stuff into a car as one rigid piece from the head to the cat.

Totally what the plan is. I feel this way will work out much better.

robus · « **Reply #28 on:** September 19, 2012, 12:00:35 PM »

Quote from: HiProfile on May 12, 2012, 08:41:32 PM

If you want quick spool, do a sequential compound setup. It builds boost faster than if you had that single small turbo alone, but can make nearly the power of the two combined.

Manifold feeds small turbo's hotside, exducer and WG feed large turbo's hotside. Air filter feeds large turbo's cold side, that compressor's outlet feeds the small turbo's compressor inlet. A rough pairing will be a turbo that would barely fall on it's face up top (by itself), and a 2nd turbo with a compressor that's 1.5-2x the size. Make that turbo's turbine as big as possible.

IIRC FreeEMS Fred has his EMS powering a j-series accord with such a setup, works tits. There is also a DSM that is making 681whp with a big 16g + 60-1 (full T4).

alright, I'm thinking to do this on my h22 lude with a 16g from a subbie and an hx40. I'm wondering if that 16g is too small, or if it doesn't matter that much?

weirtech · « **Reply #29 on:** September 19, 2012, 03:36:40 PM »

insane. i love it!

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Author Topic: Twin Turbo F23 Accord CD5 (Build #4) (Read 17252 times)