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Old 02-03-2014, 05:03 PM   #55
WeeYari
 
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Got a selling price set yet? I couldn't spot mention of $$s in this thread.
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Old 02-03-2014, 05:40 PM   #56
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nice .65HP and 3.2lbft torque. now if you can get the production price and kits together.
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Old 02-03-2014, 05:54 PM   #57
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Originally Posted by WeeYari View Post
Got a selling price set yet? I couldn't spot mention of $$s in this thread.
Not yet... I just ordered a dozen blocks for the first production run and the shop hasn't gotten back to me yet on the material cost.

From the original concept on November 29th to a dyno tested prototype took only a little over 3 months and that was with the holidays. So if all goes well, I should have finished products ready to ship in another month for a total elapsed time of 4 months from virtual concept to the reality of a finished product ready to sell.

This is the advantage of a microbusiness where just one person calls all the shots.


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Old 02-03-2014, 06:19 PM   #58
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nice .65HP and 3.2lbft torque. now if you can get the production price and kits together.
I'm working on it right now...
The negligible horsepower increase is only incidental as this was not designed to be a top end high performance accessory. The purpose of this spacer is to make regular daily driving easier because the engine doesn't have to work as hard at low rpms.

And the increased torque peak really isn't all that much either. Most all of the advantage comes from shifting the whole torque curve down lower in the rpm range. So as the two torque curves are climbing, the spacer curve remains above of the baseline curve. This spreads the torque increase over a larger rpm operating range.

This mod is for just regular low rpm daily driving.

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Last edited by tooter; 02-03-2014 at 08:07 PM.
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Old 02-03-2014, 09:29 PM   #59
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Anyway to overlay this with a tooter dyno as well?

Btw madness on the midrange gains!
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Old 02-03-2014, 11:45 PM   #60
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Originally Posted by malibuguy View Post
Anyway to overlay this with a tooter dyno as well?

Btw madness on the midrange gains!
That's a great idea. I'll see if Harry can do it. I need to talk to him about the chart anyways as the peak numbers don't match up with the line on the chart, so one or the other isn't right.

The tooter manifold with the larger throttle body makes 111 horsepower, so it's graph will be a lot stronger at the top.

It would be run 16 with the plain tooter intake manifold and the 1ZZ throttle body...


...and run 23 with the stock manifold and the tooter I.V spacer.



Longer intake runners making more torque is a sound mechanical principle that worked out really well on my Tacoma, so I figured, heck, why not for the Yaris too?

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Last edited by tooter; 02-04-2014 at 12:05 AM.
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Old 02-04-2014, 02:20 AM   #61
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If you have the resources, you should experiment with different spacer sizes to find the optimum length. I'd be curious to see the different outcomes.

And then run them all on the dyno, on the same day so there is no discrepancy between the variables.
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Old 02-04-2014, 03:12 AM   #62
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I like the bump in torque and where the bumps are in the band.
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Old 02-04-2014, 07:49 AM   #63
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I'm very excited about this spacer. Most of my driving is done in this rpm range, and will make the 1.5's acceptable torque even better.
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Old 02-04-2014, 11:41 AM   #64
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There's something that doesn't show up in the dyno runs, and that's partial throttle performance at extremely low rpms right down to idle and even below. This is because the dyno runs done by mashing the gas pedal to the floor at 1,300 rpm in third gear. This is an extreme condition that is not encountered in normal driving. Very low off idle torque is exceptionally good especially when taking off from a stop with a manual transmission. On level ground even if you let out the clutch and forget to use the throttle, the engine doesn't die. Instead the car slowly moves forward without any bucking.

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Old 02-04-2014, 11:44 AM   #65
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Quote:
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Not yet... I just ordered a dozen blocks for the first production run and the shop hasn't gotten back to me yet on the material cost.
In the meantime, can you source a shipping quote to L0P 1K0 Ontario, Canada? Preferably USPS.
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Old 02-04-2014, 11:54 AM   #66
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sweeet!
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"Horsepower is how fast you hit the object. Torque is how far you move that object.."
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Old 02-04-2014, 12:02 PM   #67
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Quote:
Originally Posted by 7:34pm View Post
If you have the resources, you should experiment with different spacer sizes to find the optimum length. I'd be curious to see the different outcomes.

And then run them all on the dyno, on the same day so there is no discrepancy between the variables.
Sorry, I don't have the time or the resources.

This is just a hobby I do on the side in my free time off of work. Dyno time gets really expensive when your car is on the machine and you're trying to swap out parts. Adding the cost for new CNC programming would make it unpractical to make a bunch of different sizes. Anyways you can simply extrapolate the difference as a one inch spacer would make half the torque as a two inch.

I picked 2 inches because that is the thickest spacer which will work without interfering with the engine peripherals like the oil dipstick tube. The two inch simply drops into place like it belongs there.



Other intake manifold spacers sold like this one for a Toyota Tacoma V6 are usually only a half inch thick...



...while the tooter I.V is like stacking up FOUR of them.





Greg

Last edited by tooter; 02-04-2014 at 12:16 PM.
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Old 02-04-2014, 04:42 PM   #68
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How about a 1/2" spacer for between the Blitz and the head? I haven't had a heat soak situation yet but this might be a pre-emptive strike. If possible, how much and how soon?
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Old 02-04-2014, 05:09 PM   #69
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^^

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Sorry, I don't have the time or the resources.
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Old 02-04-2014, 05:23 PM   #70
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How about a 1/2" spacer for between the Blitz and the head? I haven't had a heat soak situation yet but this might be a pre-emptive strike. If possible, how much and how soon?
They're already available. You can get them from Garm at MicroImage.com. Two of them make about a half inch.

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Old 02-04-2014, 05:39 PM   #71
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Got a selling price set yet? I couldn't spot mention of $$s in this thread.
When they're available they'll be offered for sale at $265 including shipping. The shop still has tooter II.VII Tacoma spacers in the works so the I.V's will be machined once they're completed.



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Old 02-04-2014, 10:10 PM   #72
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Bummer great mod, but out of my price range right now. I'm curious Tooter, what do you think the spacer would yield on a bone stock Yaris?
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