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-   -   Dh-racing 74mm Billet Throttle Body Combo (https://www.civicforums.com/forums/79-engine-swaps/141265-dh-racing-74mm-billet-throttle-body-combo.html)

ponyman 02-25-2004 11:34 PM


Originally posted by DhRacingJosh
Hehe I was just like ummm, never had that asked of me before. When we get to Vegas guys (Probably be in the new place in about two weeks) we will be buying a new dyno and shop and trust me I WILL NEVER BE BORED. I will be throwing combinations all over the place. All in due time, pretty soon you are going to be like wow, wow, wow, dyno after dyno.

Do I understand that correctly? Are you moving your shop to Vegas? If so, that rules for me. As I am in Flagstaff, Az and only 4 hours away, and I graduate in May and get to get a realy job with real money...this could rock!!!!:rockon:

DhRacingJosh 02-26-2004 12:03 AM

Yup we are moving to Vegas very quick here, but I will keep the same cell number.

DhRacingJosh 02-26-2004 12:29 AM

Axles will be fine no worries there, unless you get really high on the power which you could, then I would keep away from hooking up really hard off the line. As for your tranny if you get deep enough into it, send me your diff and I will weld it so your tranny should be just fine.

chocobo15_2000 02-26-2004 01:24 AM

if i order by the end of the week...will i be one of the first 6? i just don't want to wait for your next shipment of 25...i just want it ASAP! ^_^ let me know so i know when to send $$

DhRacingJosh 02-26-2004 01:44 AM

Yeah I will have one here to ship right out to you. Only 3 TBs left on this shipment, next batch 1 1/2 weeks away

chocobo15_2000 02-26-2004 01:33 PM

what happens if i don't equip myself with the safc? how bad is it?

DhRacingJosh 02-26-2004 04:13 PM

You need it to add fuel. I wouldn't go without it.

lid6662 02-26-2004 05:45 PM

? Would'nt u want to use vafc2 instead of safc? Also Would this mess up my warranty?
I bet honda wouldnt like it lol
But hell who cares! I want more power awwwww
:_bow: dhracing

slowciv 02-26-2004 09:04 PM

well thats great u guys are doing all of this for our cars and even better that u guys are mobin out to vegas cause i LIVE HERE!! i just ordered my sf kit so after that then i will get the tb/intake manifold. but one question. 74 mm seems really big. my friends mustang gt has a 75mm tb and i could of sworn that i see aftermarket tb's that are like 60 or maybe even 65mm's.. thanks

chocobo15_2000 02-26-2004 09:10 PM

i wanna know also, would it be the VAFC or SAFC to make this tb work properly?

opto_isolator 02-26-2004 09:15 PM


Originally posted by chocobo15_2000
i wanna know also, would it be the VAFC or SAFC to make this tb work properly?
It depends on your car! VAFC has VTEC functionality, SAFC is the same thing without VTEC functionality.....

Project2k2 02-26-2004 09:50 PM

Beat me to it. THe VAFC abd SAFC have the asme capabilitys but the VAFC has the ability to adjust the VTEC engagement point.

guns 02-26-2004 11:05 PM


Originally posted by DhRacingJosh
Axles will be fine no worries there, unless you get really high on the power which you could, then I would keep away from hooking up really hard off the line. As for your tranny if you get deep enough into it, send me your diff and I will weld it so your tranny should be just fine.
So far I am looking at the following upgrades:
DH: PnP heads, TB w/ port matched IM, 10lb flywheel and clutch
SF Turbo kit w/all upgrades: equal lenght, upgraded turbo, methanol inj, etc..
Vafc2, Turbo XS dual boost controler, Greddy Turbo timer, Denso IK22's.
Underdrive pulley, Geddy Evo exhaust and catless down pipe.

What is a reasonable horse power for this setup and at what point should I get my diff. welded.

gearbox 02-26-2004 11:19 PM

That's gonna give crazy power if everything works out. I have a VAFCII already and it has tons of tuning stuff. I'm also looking at ported head from DH soon.

guns 02-26-2004 11:42 PM


Originally posted by gearbox
That's gonna give crazy power if everything works out. I have a VAFCII already and it has tons of tuning stuff. I'm also looking at ported head from DH soon.
I was saving for an engine swap. Until, I saw amazing numbers put out by Cat and started leaning towards keeping my D17 w/turbo and heads. I was able to get an awsome deal on the turbo setup from "torque king". I was not going to go with the PnP for a while. But after I saw the picture of the billet TB I was hooked and then figured what the hell and put the whole DH package on the credit cards.

My only worry is that this is my daily driver. I want to make sure I do it right. The heads, TB and IM will let me get more power w/ less boost, which should be better overall qaulity. I am hoping for 250-270 horse power with boost set high and hope for 200 horse power with boost set low. Thats why I ordered the Turbo XS dual stage controler.

What do you think Josh. What would you recomend I add. Hurry before the credit limmit runs out :hithead:

anotherlevel 02-26-2004 11:43 PM

I wish it was June and I was graduating from college so I can get a better job and buy all this stuff. Well, at least by then we'll have dyno proof and I'll just buy it all.

guns 02-26-2004 11:48 PM


Originally posted by anotherlevel
I wish it was June and I was graduating from college so I can get a better job and buy all this stuff. Well, at least by then we'll have dyno proof and I'll just buy it all.
Back when I was in college they gave out student visa cards like crazy. Get one and go with the billet TB combo. The price is good and it will go nicely w/ future mods. :rockon:

lid6662 02-26-2004 11:55 PM


Back when I was in college they gave out student visa cards like crazy
How can i get one???

DhRacingJosh 02-27-2004 02:49 AM


well thats great u guys are doing all of this for our cars and even better that u guys are mobin out to vegas cause i LIVE HERE!! i just ordered my sf kit so after that then i will get the tb/intake manifold. but one question. 74 mm seems really big. my friends mustang gt has a 75mm tb and i could of sworn that i see aftermarket tb's that are like 60 or maybe even 65mm's.. thanks
74mm is not too big, big yes, but it has a taper bore. Funnel Effect, and is perfect for your setup.

About Your Welded Diff. I always run one, if you have any muscle then it's easy to drive. I love it because I know all my power it being distributed evenly between the two wheels.


I was saving for an engine swap. Until, I saw amazing numbers put out by Cat and started leaning towards keeping my D17 w/turbo and heads. I was able to get an awsome deal on the turbo setup from "torque king". I was not going to go with the PnP for a while. But after I saw the picture of the billet TB I was hooked and then figured what the hell and put the whole DH package on the credit cards.
Honestly man, you need to look into atleast a block guard, and I would really suggest getting into a built block. You are going to be able to put A LOT of power out. Kinda sucks I just sent your manifold out or I would have built you a cutom manifold for all that pressure you will have. Other then that you see to have a strong setup, but you will want to start looking into a welded diff, axles and a stronger block. I dont know about D17 pistons, but you dont want to find out when they melt.

guns 02-27-2004 10:27 AM

IT looks like I might have to drive to Vegas this year :rofl:

DhRacingJosh 02-27-2004 02:08 PM

We will be having meets there, parties, ect.... I will have one meet yearly where I will expect people to take time off and drive the distance to show up. I am planning on having 500+ of our customers there at this meet, and to drive the Vegas streets. If you want to be on National TV for a meet like this then believe it will happen

djmota 02-27-2004 02:13 PM

looks like the throttle body will eliminate cruise control and the idle air valve. Is this true?

DhRacingJosh 02-27-2004 02:15 PM

I believe you still can keep the Idle air plugged in but just tossed off to the side. Don't know about your cruise, I like control so I never thought about it.

djmota 02-27-2004 02:24 PM

I here ya. The only thing needed for cruise would be a second place for another cable right next to the throttle cable. Ahhh the price we pay for speed :D
What other applications does your 74mm throttle body fit?

halflife 02-27-2004 03:12 PM

you say "expect 25 to 30 at the wheels" SO are you just guessing or do you have before / after dyno results??

WannaBFast 02-27-2004 07:35 PM

so when u gonna offer bigger runners on the manifold?

DhRacingJosh 02-27-2004 08:13 PM

Bigger runners? I already have them on our custom one. It is higly designed to flow like a champ. Our throttle body fits everything from WRX's, to civics to S2000's, ect.. Pretty much everything we have found can work with it.

I have a SOHC 1.6 with a better flowing head then your motors already, and I still picked up 26 on this combo with a stock ported manifold, so you guys with more stroke, and the manifold being the weakest part of your motor should see the same if not more

Project2k2 02-27-2004 10:50 PM

Quick question about the SAFC and tuning? I will be getting your combo here, already got the duel groove, then the SAFC, then more exhaust work, then the PNP. Now my question is, should I wait till I get everything to get the car tuned? I mean all that will come throuhout the rest of the year.

red02 02-27-2004 11:41 PM

ok so the gains on the custom and the stock ported manifold are the same, but for more power possibilities without it turning into a shrapnal grenade the custom is better? yes? no? maybe?

DhRacingJosh 02-28-2004 12:57 AM

Custom is better for boost being the plastic won't like the pressure of a turbo. As for your tuning question the SAFC and VAFC would do just fine till you have all the parts then I would do a dyno trip for peak power, but the V and SAFC will get you pretty close.


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