Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Garage > 4 Cylinder

Notices

tooter 2.7 intake manifold spacer...

Reply
 
Thread Tools Search this Thread
Old 07-11-2013, 08:28 PM   #1
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
Smile tooter 2.7 intake manifold spacer...

I'm getting the stuff together to make a manifold spacer for the little 2.7 workhorse, and this is the finished project...





This manifold will be used as the model for reproducing the details...




The spacer will be machined with the proper grooves to accept a stock Toyota O ring intake manifold-to-head gasket exactly like the one already on this manifold. This will make for a nice secure reliable air tight fit exactly as good as the manifold. In fact it will be better than the manifold as the two facing surfaces will both be machined aluminum.

The 2.7 enjoys the distinct advantage of having plenty of side clearance so the spacer will be a full 1 inch thick. I'll be making just one prototype for dyno testing. That's why I did these recent baseline runs. So there will be an accurate comparison when I do the runs with the spacer.

The manifold runners that curl around from the orange gasket to the white line where they enter the plenum are 17 inches long.




So a one inch spacer will make them 6% longer which should slightly lower the torque curve. How much isn't yet known. The dyno results will tell the tale. This is why I made damn sure to have a torque curve that starts before 1,500rpm.

I already have some experience making and selling manifold flanges, adaptors, "build your own" manifold kits, as well as complete manifolds...



This is a purely experimental one I'm working on right now...



The experimental plenum is completely devoid of any flat reflective surfaces to reflect the pulses coming out of the mouths of the runners.




The runners are in direct alignment with the throttle body bore.



It's going to be fun to see how this experimental project goes.

Only if the tooter 2.7 intake manifold spacer turns in some decent dyno gains will they be manufactured and offered for sale to anyone who's interested in buying them. If not, the prototype will just be an expensive paperweight!

And no preorders... Only when they are actually in stock and ready to ship will they be offered for sale. Jerking people around is not my style.

I'll keep everyone posted on the progress in this thread. I just talked with CNC guy about the job today, and he's going to have his machine down for required maintenance for a few weeks, but this project is first in line when it's back in action.

Greg
  Reply With Quote
Old 07-11-2013, 08:35 PM   #2
senile member
Tacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shedTacoyota is one of the sharper tools in the shed
 
Tacoyota's Avatar
Navy: Ex Navy. subs
Joined: Jul 2009, #20028
Location: North of Cali, South of Canada
Gender: Male
Posts: 2,969
Tacoyota's Tacoma Gallery
subbed. Hope it works out well.
  Reply With Quote
Old 07-11-2013, 08:48 PM   #3
Junior Member
Kilo Sierra is on a distinguished road
Joined: Nov 2010, #46859
Location: Alaska
Gender: Male
Posts: 23
Kilo Sierra's Tacoma Gallery
Ditto

What he said...

ks
  Reply With Quote
Old 07-11-2013, 08:57 PM   #4
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
There's only one way to find out... and that's to actually make one and dyno test it.



I've been doing flanges for about a year now so I'm familiar with the required details. This one should go pretty easily.

(the CNC technician took this nicely composed picture...)



Here's the CNC machine making flanges two at a time...

http://www.youtube.com/watch?v=rh4Ho5tI8KA
  Reply With Quote
Old 07-11-2013, 09:24 PM   #5
Junior Member
Kilo Sierra is on a distinguished road
Joined: Nov 2010, #46859
Location: Alaska
Gender: Male
Posts: 23
Kilo Sierra's Tacoma Gallery
If I understand correctly you are focusing on torque gains?

ks
  Reply With Quote
Old 07-11-2013, 09:40 PM   #6
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
Quote:
Originally Posted by Kilo Sierra View Post
If I understand correctly you are focusing on torque gains?

ks
Exactly.

Only low end torque.
Not high end horsepower.

Longer runners should move the torque curve down in the rpm range. How much if at all, I'll find out soon. If the concept works, I'll JB Weld two together and find out what 2 inches of extra runner length does to the torque curve. The little 4 banger has lots of room on the side.
  Reply With Quote
Old 07-11-2013, 11:04 PM   #7
Junior Member
Kilo Sierra is on a distinguished road
Joined: Nov 2010, #46859
Location: Alaska
Gender: Male
Posts: 23
Kilo Sierra's Tacoma Gallery
I like it...

Good project/well thought out.

Hope your efforts are productive.


ks
  Reply With Quote
Old 07-12-2013, 08:21 AM   #8
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
Thanks, Kilo...

I have a real day job for money. This stuff is just a fun hobby, and is an idea which I find to be totally fascinating...

MicroBusiness.

This is where just one person comes up with a concept...

...and finds another micro businesses to turn the concept into a design...

...and then hires another micro business to test a prototype...

...and if its proven to be useful by another micro business testing it...

...then another micro business is employed to manufacture a finished product from the prototype...

...which is then marketed by just one person...

...me.

Notice that the complete process pipeline from concept to finished product is totally controlled by just one person. This allows the clarity of vision to explore and to innovate. I highly recommend this, and think that everyone should have their own microbusiness to experience the personal satisfaction of exploring creating designing testing manufacturing and marketing...

... on a really tiny scale.
  Reply With Quote
Old 07-12-2013, 08:24 AM   #9
Member
RSC17 has a spectacular aura aboutRSC17 has a spectacular aura about
 
RSC17's Avatar
Name: Rick
Joined: Sep 2012, #87097
Location: Cleveland, OH
Gender: Male
Posts: 60
RSC17's Tacoma Gallery
Subbed
  Reply With Quote
Old 07-12-2013, 08:35 AM   #10
Junior Member
Kilo Sierra is on a distinguished road
Joined: Nov 2010, #46859
Location: Alaska
Gender: Male
Posts: 23
Kilo Sierra's Tacoma Gallery
Even better.

Quality control vs production convenience.

Good luck.

ks
  Reply With Quote
Old 07-12-2013, 08:49 AM   #11
Member
StevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud ofStevoNB has much to be proud of
Name: Steve
Joined: Jan 2013, #95791
Location: NB, Canada
Gender: Male
Posts: 81
StevoNB's Tacoma Gallery
Nice work. Subbd for the dyno results.
  Reply With Quote
Old 07-12-2013, 08:56 AM   #12
Senior Member
danteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud ofdanteisme has much to be proud of
Joined: Jan 2008, #4248
Location: pittsburgh
Age: 31
Gender: Male
Posts: 1,144
danteisme's Tacoma Gallery
subbed for results too! good work!
  Reply With Quote
Old 07-12-2013, 10:40 AM   #13
Senior Member
Mr. Pick is on a distinguished road
 
Mr. Pick's Avatar
Joined: Jun 2012, #81609
Location: Middle TN
Gender: Male
Posts: 116
Mr. Pick's Tacoma Gallery
Looking forward to seeing what the spacer does. Is there any spare vertical room to experiment with throttle body spacers?
  Reply With Quote
Old 07-12-2013, 11:39 AM   #14
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
Just took a look under my hood. This pic is with the hood popped 1.5 inches at the front latch.



That difference is decreased as you move to the back closer to the hinges, but even at that, it appears to have 2 inches of comfortable clearance.

You'd have to deal with repositioning the stock intake as there is a big plastic box bolted onto the valve cover. I got the Injen intake because the only points of attachment are the throttle body and one rubber mounted bolt near the air filter end. It can easily be repositioned simply by bending the mounting bracket.

A throttle body spacer does absolutely nothing to enhance torque as the runners remain totally unaffected. However, it does make the plenum's volume slightly larger but that's it. Lots of people sell them on ebay.
  Reply With Quote
Old 07-12-2013, 11:44 AM   #15
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
When I had the throttle body off, I made some measurements for reference.

Throttle body bore 61mm
Throttle body stud spacing 65mm square

With those two measurements you could cut out your own spacer from some soft aluminum stock.
  Reply With Quote
Old 07-13-2013, 05:14 AM   #16
Senior Member
Mr. Pick is on a distinguished road
 
Mr. Pick's Avatar
Joined: Jun 2012, #81609
Location: Middle TN
Gender: Male
Posts: 116
Mr. Pick's Tacoma Gallery
Quote:
Originally Posted by tooter View Post

A throttle body spacer does absolutely nothing to enhance torque as the runners remain totally unaffected. However, it does make the plenum's volume slightly larger but that's it. Lots of people sell them on ebay.
You think even a tapered or venturi style spacer would have no impact on lower rpm torque? I know when I was drag racing I could change my 60' times with various shaped carb spacers, but of course a carb is a little different situation than port FI.
  Reply With Quote
Old 07-13-2013, 05:26 AM   #17
Senior Member
camojared is a jewel in the roughcamojared is a jewel in the roughcamojared is a jewel in the roughcamojared is a jewel in the rough
Name: Jared
Joined: May 2013, #104007
Location: NW Ohio
Gender: Male
Posts: 330
camojared's Tacoma Gallery
Cant wait to see if you get any gains, and then with a 2in spacer. The little 4 banger does have tons of room.
  Reply With Quote
Old 07-13-2013, 11:09 AM   #18
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
Quote:
Originally Posted by Mr. Pick View Post
You think even a tapered or venturi style spacer would have no impact on lower rpm torque? I know when I was drag racing I could change my 60' times with various shaped carb spacers, but of course a carb is a little different situation than port FI.
Yes, it's a different game now...
All the throttle body does is meter air so there's no advantage in spacers there. However, if a manifold will accept one, you can make a change with a larger throttle body. That only affects top end though.



I did that on my Yaris because the manifold had a bore big enough to accept one. We can't do that on our Tacos because there aren't any high performance manifolds made for them.

The most beneficial mod I can see to enhance low end torque is longer runners. My 1996 had really long runners...



It even had 8 intake ports. I looked at our 2.7 just to see if the intakes were still split, and they aren't...



If they were, I was going to design a splitter in the adaptor flange, but since the split doesn't happen until right at the valves, it'll simply be straight through with no alterations.

The intake manifold on my Yaris has 21 inch long runners... and for a little economy engine it has lots of low end torque.



So as I see it, since a plastic manifold does not lend to customization, at least there's plenty of room to lengthen the runners with a spacer.
  Reply With Quote
Old 07-13-2013, 01:45 PM   #19
Senior Member
Mr. Pick is on a distinguished road
 
Mr. Pick's Avatar
Joined: Jun 2012, #81609
Location: Middle TN
Gender: Male
Posts: 116
Mr. Pick's Tacoma Gallery
Thanks, Greg, that's all very insightful information. And thanks for answering my questions. Good luck with getting the spacer ready, can't wait to see what it does.
  Reply With Quote
Old 07-13-2013, 06:20 PM   #20
tooter [OP] tooter is online now
play every day
tooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shedtooter is one of the sharper tools in the shed
 
tooter's Avatar
Army: CH47 Chinook mechanic
Name: Greg
Joined: Apr 2013, #102021
Location: Los Angeles
Gender: Male
Posts: 2,081
tooter's Tacoma Gallery
You're welcome, Mr. Pick...

A hobby is doing something in your spare time that you love to do... and I truly love doing this. It's no end of personal satisfaction to explore uncharted territory.
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Intake Manifold Spacer 4.0l Coming! highaltitude Performance and Tuning 1432 07-11-2014 01:18 PM
intake manifold Hambone155 1st Gen. Tacomas 1 01-15-2012 11:52 PM
NST intake manifold spacer...increased low end TQ and +3mpgs for $300? yosh2000 2nd Gen. Tacomas 33 11-14-2011 12:36 PM
intake manifold need help Maxola89 General Automotive 4 09-28-2009 08:14 PM
Intake Manifold? 5vzrider00 Performance and Tuning 1 06-13-2008 04:35 PM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.