:::RHMT::: Real Home Made Turbo

General Category => General Discussion => Topic started by: highroller54 on August 27, 2010, 02:32:53 PM

Title: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 02:32:53 PM
Alright I hate to ask it but......................
Title: Re: how bad are obx itb's?
Post by: sewell94 on August 27, 2010, 03:20:24 PM
If its for a gsr, buddy of mine has a set of almost brandnew jenveys for the cheap
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 04:13:45 PM
I would kill for jenveys but its a itr head. If they are really cheap I could swap out the mani.
Title: Re: how bad are obx itb's?
Post by: Lowerit on August 27, 2010, 05:53:15 PM
I have a read a few times that they will work well if you replace all the hardware (nuts and bolts) and use washers to take up some slop in the linkage.

Title: Re: how bad are obx itb's?
Post by: chris on August 27, 2010, 05:55:57 PM
I saw a set in person maybe 6 months back. The linkage set up is terrible and the springs they use are to weak to set the throttle plates back from wot back down to idle. Basically from what I looked at the car will never idle correctly with them and they are small for itb's anyways.



Just get a type r clone manifold+ported. More than enough
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 06:05:34 PM

Just get a type r clone manifold+ported. More than enough

not an option, its either itbs or custom intake.
Title: Re: how bad are obx itb's?
Post by: dvst8r on August 27, 2010, 06:08:52 PM

Just get a type r clone manifold+ported. More than enough

not an option, its either itbs or custom intake.

Honda motor, non honda chassis...

Still should have just done a boosted D.  :-*
Title: Re: how bad are obx itb's?
Post by: chris on August 27, 2010, 06:24:20 PM
Oem b16a manifold runners+box plenum welded on. Done. Easy cheap and works.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 06:26:46 PM
Oem b16a manifold runners+box plenum welded on. Done. Easy cheap and works.

not unless there are some 90's or maybe 45's welded right after the injectors
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 06:29:14 PM

Still should have just done a boosted D.  :-*

the subframe will be setup for both b's and d's. It will have a turbo d in it at a later date. It waould be alot easier if it didn't need a intercooler  :-\
Title: Re: how bad are obx itb's?
Post by: shadow on August 27, 2010, 06:29:49 PM

Just get a type r clone manifold+ported. More than enough

not an option, its either itbs or custom intake.

Honda motor, non honda chassis...

Still should have just done a boosted D.  :-*

cooper?
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 06:33:13 PM

Just get a type r clone manifold+ported. More than enough

not an option, its either itbs or custom intake.

Honda motor, non honda chassis...

Still should have just done a boosted D.  :-*

cooper?

 ;) wait for build thread
Title: Re: how bad are obx itb's?
Post by: chris on August 27, 2010, 06:52:20 PM
If you need itb's just go with Jeff frank spec shit. Cut up an oem manifold/the biggest cycle itb's you can source aka busa's
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 06:54:31 PM
well that the other plan but I was hoping for 240whp and I think the biggest is still too small. Boring is an option but then the price gets closer to just buying something.

PBT sponcership? lol
Title: Re: how bad are obx itb's?
Post by: chris on August 27, 2010, 06:57:09 PM
Yes if you want to sponsor me thats fine.


Title: Re: how bad are obx itb's?
Post by: dvst8r on August 27, 2010, 07:51:40 PM
... I was hoping for 240whp...

So you are going turbo then.  :P
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 08:30:50 PM
... I was hoping for 240whp...

So you are going turbo then.  :P

or just spend too much money and fail. (see plan b)
Title: Re: how bad are obx itb's?
Post by: Super Dipper on August 27, 2010, 08:32:50 PM
ha, im pretty sure what the  O0 is building.

Ill send you some pics of some guys have done out here Chad.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 08:33:45 PM
ha, im pretty sure what the  O0 is building.

Ill send you some pics of some guys have done out here Chad.

great! did my brake diagnostics help you at all?
Title: Re: how bad are obx itb's?
Post by: Super Dipper on August 27, 2010, 08:38:34 PM
residual pressure valves caused nothing but grief.

talked to wilwood techs this morning, turns out there is a goofy way to bleed a brake system with balance bars on the masters. spent a good while doing that today, seems to be doing better. Gonna road test it tmrw once i can figure out why the fuel pump circuit is blowing fuses randomly now...ugh stupid car, i just want it out of my shop. :(
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 08:41:17 PM
so thats a no, lol.  :-[
Title: Re: how bad are obx itb's?
Post by: HiProfile on August 27, 2010, 10:40:49 PM
The only reason anyone should go NA is if some nog stole their turbo. Or they're swapping in a J-series.
Title: Re: how bad are obx itb's?
Post by: turbob16hatch on August 27, 2010, 11:20:29 PM
Personally after doing the whole rhmt itb thing years ago, it was a really fun project but i gathered that it really wasn't worth it in the end unless your doing it for the sole purpose of fucking around and building shit. and buying a prebuilt set of itb's kinda defeats the purpose , right?

Although this winter i'm temped to build a custom set of 38mm or so itb's for the a6 with a custom plenum.(turbo is staying of course) might be fun, idk.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 11:49:25 PM
I'm doing it for lack of room. The car will weigh fuck all anyways, should still be quick, if it sucks I will stick the swap into a eg hatch and sell it to some douch bag to go built turbo d.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 27, 2010, 11:50:54 PM
they are small for itb's anyways.


I didn't know they were THAT small, fuck that.
Title: Re: how bad are obx itb's?
Post by: turbob16hatch on August 28, 2010, 12:03:06 AM
they are small for itb's anyways.


I didn't know they were THAT small, fuck that.

there only small if you think you can ONLY use 50mm+  itb's.
Title: Re: how bad are obx itb's?
Post by: Super Dipper on August 28, 2010, 01:14:19 AM
so thats a no, lol.  :-[

not necessarily. Ill know more tmrw.
Title: Re: how bad are obx itb's?
Post by: Phate on August 28, 2010, 01:29:01 AM
Make a set of these.  It honestly doesn't look all too difficult
(https://realhomemadeturbo.com/forum/proxy.php?request=http%3A%2F%2Fcornerbalance.files.wordpress.com%2F2008%2F09%2Fslide-throttle.jpg&hash=d02cb2c5b72962fc7c1dd53708f89f607692b504)
Title: Re: how bad are obx itb's?
Post by: 2slow on August 28, 2010, 08:25:18 AM
On ohmt jeff had a write up on how to do these on the old projects section.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 28, 2010, 10:29:00 AM
On ohmt jeff had a write up on how to do these on the old projects section.

no shit eh?
Title: Re: how bad are obx itb's?
Post by: 92CXyD on August 28, 2010, 10:33:42 AM
On ohmt jeff had a write up on how to do these on the old projects section.

Yeah we know.  ;D
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 28, 2010, 12:55:51 PM
they are small for itb's anyways.


I didn't know they were THAT small, fuck that.

there only small if you think you can ONLY use 50mm+  itb's.

45mm is not going to feed a high rpm 2.0l hoping for 240 whp worth a shit, if it would I would run bike shit over obx for higher quaility anyways.
Title: Re: how bad are obx itb's?
Post by: chris on August 28, 2010, 02:30:38 PM
Start doing your homework. Maybe some of the new cycle stuff got bigger from when i was doing alot of it. My assumption is they most likely did and can be bored 2-3mm larger



The only thing that will cost money is buying the cycle itb's+machine work. I still think it can be done for under 600 bucks even if you go the route of having the throttle bodies bored.
Title: Re: how bad are obx itb's?
Post by: dvst8r on August 28, 2010, 03:33:44 PM
Iirc, it is quite common to bore out the 44mm zx-14 throttle bodies to 46mm.
Title: Re: how bad are obx itb's?
Post by: dvst8r on August 28, 2010, 03:41:40 PM
Or two sets of these: http://cgi.ebay.com/ebaymotors/Polaris-Fusion-900-mikuni-throttle-bodies-2005-2006-IQ-_W0QQcmdZViewItemQQhashZitem53e2d1f1ceQQitemZ360287695310QQptZSnowmobileQ5fPartsQ5fAccessories (http://cgi.ebay.com/ebaymotors/Polaris-Fusion-900-mikuni-throttle-bodies-2005-2006-IQ-_W0QQcmdZViewItemQQhashZitem53e2d1f1ceQQitemZ360287695310QQptZSnowmobileQ5fPartsQ5fAccessories)
Title: Re: how bad are obx itb's?
Post by: dvst8r on August 28, 2010, 03:46:25 PM
M1000's run a pair of 50mm throttle bodies for a ~160hp so with 4 of them they should easily support the 240hp you are looking for.
Title: Re: how bad are obx itb's?
Post by: highroller54 on August 28, 2010, 08:57:40 PM
Brett thats some good thinking right there  ;)
Title: Re: how bad are obx itb's?
Post by: dvst8r on August 29, 2010, 12:26:26 AM
I really want this to be a turbo setup, but since you're so set on at least trying N/A, I might as well help out a bit...

For more options 2009-10 CRF450R's used 50mm throttle bodies too, the 2011's dropped down to a 46mm something about throttle response or marketing hype or...
Title: Re: how bad are obx itb's?
Post by: raiden571 on August 30, 2010, 10:21:06 AM
i have a set of custom itbs that will fit along with everything else like a fuel pressure reg, etc for that car. let me know if your interested.
Title: Re: how bad are obx itb's?
Post by: Donald125 on September 01, 2010, 12:25:23 AM
me love motorcycle power bands
Title: Re: how bad are obx itb's?
Post by: ratcityrex on September 01, 2010, 12:46:44 AM
me love motorcycle power bands

Holly shit man, havent see you in a while
Title: Re: how bad are obx itb's?
Post by: jabberwock on September 01, 2010, 08:33:09 AM
Donald, sell chinese shit!  Nao!