[QUOTE=VZ935;9478876]Early Andial 962 itb's rebuilt by Matt Blast

http://forums.pelicanparts.com/uploa...1487443340.jpg

You win :)

Here's mine: PMO 46's run by Motec. Bosch 044 fuel pump. I'm on vacation right now and don't remember the injectors or pressure regulator. 3.8 motor with careful port work and a slightly hotter cam making 370 hp and 315 lbft. The early factory airbox in the picture was tested but found to me too small to support the needed airflow. Max power and torque were reached with K&N air filters and a early factory style 2 in and 2 out sport muffler. Headers are B&B 1 3/4".

http://forums.pelicanparts.com/uploa...1487477502.jpg

Beautiful engine Brooke...................

regards,
al

I love all the eye candy I see here. Sometimes I have to avoid looking at these threads because they inspire me to build something else.

RSR slides used with efi and a 962 flat fan on a 3.4


http://forums.pelicanparts.com/uploa...1487485209.jpg
http://forums.pelicanparts.com/uploa...1487485223.jpg

That looks sharp! Is it a Gamroth motor?

Did you consider cutting strategic areas out of the early airbox and replacing with screen to increase flow?

Holy moly that looks good! Love those flat fan setup, and ITB's - How much was the engine moved forward using that custom engine mount? and did the transmission mount had to be custom to fit under the chassis? Thanks for sharing!

Ran an upside down 935 box

http://forums.pelicanparts.com/uploa...1487522442.jpg

It's not a Gamroth build. We did cut a second 3" intake on the front side of the airbox and the two intakes theoretically should move enough air. The issue seems to be not enough volume of air around the velocity stacks to allow sufficient flow for the motor at peak demand.

Interesting, thanks.

Here's mine... set to go on twin plug 3.0/3.2ss,

http://forums.pelicanparts.com/uploa...1488128647.jpg

Twm
 

Nice....are those TWM/Borla ITBs or PMO? I've used them both and they work very well.

regards,
al

Long shot but has anyone noticed any major differences on the (butt) dyno between PMO and Jenveys?

Thanks Al, these are TWM.. can't wait to get the project stated, have most of the parts in place already. Just need to split case for some clean-up and a re-seal (42k mi eng)... or might go deeper with case mods, turbo oil pump etc.. biggest thing is I'm still trying to get a what cam would be the best for this application.

Will be going with the Rasant ?? Aem Infinity set-up as I have two of these I will end-up doing and would like to be able to duplicate some of the effort. Although the 2nd eng is already 3.4 running Carrera intake.. which will stay.

Definitely plan on reaching out to you for some instruction, detail, etc..

Thx

Details on this exhaust? Is that a resonator of some kind?

Feel free to contact me via pm or thru my website:
X-Faktory - Home

Nice looking engine Chris........details plz...

regards,
al

prudy motor !

3.5 we built a few years ago with PMOs. The next one will use Jenveys again like our previous motors.

http://forums.pelicanparts.com/uploa...1488601344.jpg

Cheers

From several years ago. Home built 49mm throttles on a cammed 3.6.

http://forums.pelicanparts.com/uploa...1488605571.JPG

Subscribed

That's awesome. Any more pics and info on the TBs or the engine build?

97 varioram conversion>3.6 L with RS cams,Ceramic = length Headers,MK 2/2, and Koenengsberg (KMS) ECU.
(Pic is w dansk2/2 )
Build is by Specialty Cars -Nick Burkit /Allentown ,Pa.
http://forums.pelicanparts.com/uploa...1489376071.jpg
http://forums.pelicanparts.com/uploa...1489376161.jpg

How does the ram vario without that crazy stock intake?

72 911t
 

72 911T TWM Tec3r Cam Position Sensor
http://forums.pelicanparts.com/uploa...1489538671.jpg

Tremalune , the vario is no longer, hence ,3.6 vario conversion.

1986SWT , Nice !!
Questions:
What Injector size/vol?
What was the motivation to go with Tec3r Cam Position Sensors?
How long have you been running the Tec3r?
Are the air filters std PMO bases w K&N's or modified filter bases?

Are the internals stock,or is it massaged a bit ?

Do the Rennsport and Rothsport plenum setups truly have an operational valve between plenums?

I understand the purpose and existence of these valves, just wondering if they are present in these specific setups?

If there have valve just hard to see from the pics I've seen.

Also if they have a valve, what triggers it, the ECU?

http://forums.pelicanparts.com/uploa...1489952756.jpg
http://forums.pelicanparts.com/uploa...1489952756.jpg

Had it for a while but only over the last month have I started to tune. It was an inherited frankenstein project with megasquirt and butt connectors everywhere and the engine was a complete mess with valve timing way off and things torqued wrong everywhere and missing gaskets so I got frustrated and went shrink wrapped in order to get Clewett's help if needed. I went with the cam sensor to get rid of the hideous crank wheel but also to go sequential. The air filters are Weber (also PMO) based that needed to be drilled slightly to fit the TWMs. Injectors are 944, so I need to replace those if I ever find the money. I posted the data and flight data (and video) on the technical thread so you can take a look at the particulars. Internals are stock. But don't ever buy an engine that has been taken down!

Yes they do. I received a quote from Rothsport which detailed the resonance tube, solenoids etc

Now on the market via Reno Rennsports in the US:
https://renorennsport.com/wp-content/uploads/2016/11/AT-Power-Porsche-Throttle-body.pdf

Shaftless, drive-by-wire throttle bodies?

Check out the AEM Infinity ECU. You can set it up to use throttle for load, MAP for fueling and Baro/altitude and it works REALLY WELL on the street.

A buddy of mine just finished his install and the car runs just as good with ITBs with throttle based load as it did using MAP only and a regular intake on a Ford Coyote.

My car is currently running throttle based load and MAP based fueling and it runs great on the street.

David

Just shaftless, not drive by wire, at least not the ITBs.

Those are very cool and I admire the design ingenuity. However, I would be very interested in seeing some back-to-back, 3rd party, test results between ITBs with shafted butterflies (doesn't sound good or perhaps they're just the male of the species)) vs shaftless butterflies. Does this invention and the associated flow improvements translate into price/performance gains that will be meaningful and significant to the end user(s).

I'm always very interested in new design improvements...... and then gaining and understanding of how the improvement translates to improvements in the real world.

regards,
al

Those ITBs look great. I'm less interested in the shaftless design than the direct-to-head config - looks really sharp!

I haven't used or built any shaftless style throttle bodies, but I've been around them and talked with people that have built and used them - so for what that's worth: The slide throttle setup seems to be hard to make easily progressive at lighter openings, because the vacuum is pulling the slide against it's runner/guide etc. Barrel throttles don't seem to have that issue, but more of a seal/leak issue due to the machining involved.

These shaftless ones - I'd be interested to hear about as well. From old flowbench work, of course reducing or removing the shaft increases max flow, but if the throttle bodies flow more air than the engine can use at redline, it's no benefit...

Yes....regardless of shafts or no shafts...i really like the design of these ITBs.

regards,
al

A T power
 

Take a look at ATpower in the U.K. They have just started manufacture of these straight to head tbs I don't think they actually have them on there web site currently, I have one set of the first manufacturing run for my ss3.2 anodised black breathing through mfi air box, I'll update on quality once delivered.

Shaftless Throttles
 

Hi,
Brian from Reno Rennsport. A customer of ours informed me that there were some posts on here regarding the Shaftless throttle design from AT that we adapted for 911 engines. Happy to answer any questions.

We originally developed these for our Spec 911 cars as competition is very high in the class and small gains are of high value. But now we have been using them on street cars as well because the performance was a bit more than expected.

In short we have seen improved port velocity leading to power gains starting as low as 3500 and of course top end power was much improved also.
Throttle response is also greatly improved as the butterfly can be placed closer to the head and still have clean air.

We are currently working with AT on a drive by wire single throttle which should be ready sometime this summer.

thanks.

I love seeing this stuff - it's always fun to see what others are playing with.

Regarding the setup shown in the picture of post #150 - Are the push-connect fittings and poly tubing used to gather a vacuum reference? (Most push-connect fittings are not rated for vacuum applications and tend to leak under light vacuum.)