IAT - Pre/Post Thermoblock

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Old Feb 13, 2005 | 03:23 PM
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IAT - Pre/Post Thermoblock

I did some analysis this morning on IAT temps under different conditions. Summary is as follows:

Outside temps were cool today : 65F
IAT @ Idle : 113F
IAT absolute high : 115F (stoplight)
IAT absolute low : 97F flooring in 4th gear for a few seconds
IAT range normal driving : 100-111F

Now, I'll install the Thermoblock spacers and see what difference that makes in the temperatures. I'll try to do this today so that it will be better data.
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Old Feb 13, 2005 | 05:19 PM
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65F is cool?
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Old Feb 13, 2005 | 05:27 PM
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Well, I did the install. It was relatively easy and no hiccups.

Results with the Thermoblock Spacers (TB and Intake Manifold).

IAT @ Idle : 102F
IAT absolute high : 106F (long idle @ stoplight)
IAT absolute low : 86F flooring in 4th gear for a few seconds
IAT range normal driving : 89-99F

So, under all conditions (except a long idle where there is an extra amount of heat-soak) the IAT drop is at least 10F. I'd say my estimates are slightly on
the conservative side. A NA car would see a bigger temperature drop, IMO.

Keep in mind that I am measuring IAT using the OBD-II scan tool via the stock sensor.

In summary I'd recommend this product for the price!

Link: http://www.outlawengineering.com/index.html
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Old Feb 13, 2005 | 05:29 PM
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Originally Posted by phipark
65F is cool?
65F is pretty cold for me!!
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Old Feb 13, 2005 | 05:35 PM
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Originally Posted by phipark
65F is cool?

65 or warmer and I'm like eh... too warm for the track, i'll try again another day.



Nice quick write up!
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Old Feb 13, 2005 | 05:39 PM
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The last few times I hit the track it was in the 90's!!
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Old Feb 13, 2005 | 06:12 PM
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Originally Posted by allmotor_2000
Well, I did the install. It was relatively easy and no hiccups.

Results with the Thermoblock Spacers (TB and Intake Manifold).

IAT @ Idle : 102F
IAT absolute high : 106F (long idle @ stoplight)
IAT absolute low : 86F flooring in 4th gear for a few seconds
IAT range normal driving : 89-99F

So, under all conditions (except a long idle where there is an extra amount of heat-soak) the IAT drop is at least 10F. I'd say my estimates are slightly on
the conservative side. A NA car would see a bigger temperature drop, IMO.

Keep in mind that I am measuring IAT using the OBD-II scan tool via the stock sensor.

In summary I'd recommend this product for the price!

Link: http://www.outlawengineering.com/index.html
I'd like to see what the temps are when the outside temp is in the 90 range, summer driving, when everything is well saturated in heat.
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Old Feb 13, 2005 | 06:20 PM
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Originally Posted by ThinJim
I'd like to see what the temps are when the outside temp is in the 90 range, summer driving, when everything is well saturated in heat.
I second that. I live in the deep south and it gets pretty hot.


Good write up though allmotor
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Old Feb 13, 2005 | 07:01 PM
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sweeet....i was waiting for this review =D thanks allmotor
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Old Feb 13, 2005 | 07:07 PM
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So its just a spacer below the intake manifold and behind the throttle body?

You should do a pull on the dyno and see if they make a difference in power. I doubt it would be much, but just curious to see how it would compare to the gains they say it gives you.
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Old Feb 13, 2005 | 07:19 PM
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thanks much, Ram.
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Old Feb 13, 2005 | 07:51 PM
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Hope you guys find some use for this... it seems to work - the difference at night should be more.
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Old Feb 13, 2005 | 08:17 PM
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Originally Posted by allmotor_2000
The last few times I hit the track it was in the 90's!!

90 Degrees gave me a 13.7 LOL


I need all the help I can get to beat 12.9


These spacers unfortunately won't work with my application.
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Old Feb 13, 2005 | 09:05 PM
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I smell a groupbuy...
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Old Feb 13, 2005 | 09:10 PM
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Originally Posted by Silverbulit40
I smell a groupbuy...
yea yea....
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Old Feb 13, 2005 | 09:14 PM
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The distributor needs to be a Vendor before any GB
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Old Feb 13, 2005 | 10:12 PM
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SOLD - I'm in for a group buy. Thanks for the data!
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Old Feb 13, 2005 | 11:09 PM
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I just came back from dinner - about a 15 mile drive. I parked and popped the hood to feel the manifold. It was barely luke-warm... I'd even venture to say it
was at room temp while the engine was blazingly hot as usual. The Thermoblock certainly isolates the intake manifold from heat transfer!!

I like this... I suppose for $95 its worth it - but then again I got it for free Thanks Outlaw Engineering!
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Old Feb 13, 2005 | 11:14 PM
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Hey Blue, are you back from your vacation?
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Old Feb 13, 2005 | 11:18 PM
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I e-mailed Outlaw Engineering and said that there might be an interest for a Group Buy. I recommended they register with Acura-CL.com and do the needful. I don't know how much cheaper you are going to get it. The kit is not just two thermal spacers. It also includes two TB gaskets, one special gasket for the intake-manifold and all-new studs, nuts and bolts - the stock ones are not long enough.
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Old Feb 13, 2005 | 11:28 PM
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Hmmm I wonder if the intake spacer would work with Steve's I/C setup? Probably not.
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Old Feb 13, 2005 | 11:38 PM
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For $101 shipped, it might be worth a shot. Looks like I found my next weekend project.

Thanks for the write-up, Ram. I heard about the company a while back, but wanted an opinion from a fellow forum member.

Any plans on doing a dyno run to see how many horses you've gained from this??
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Old Feb 14, 2005 | 12:38 AM
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From: san gabriel


this dyno of a stock tl type s before and after with the spacers. Opinions? You guys think this is accurate? If so....the price is more than worth it imo
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Old Feb 14, 2005 | 12:50 AM
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Edit: Damn, I misread the graph.

Looks right.

I may probably buy these mods this week.
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Old Feb 14, 2005 | 06:07 AM
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Originally Posted by mrsteve
Hmmm I wonder if the intake spacer would work with Steve's I/C setup? Probably not.
Yes it would. There would be no difference between this and the stock manifold. Depending on the thickness though, it may require longer bolts. But that is it.
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Old Feb 14, 2005 | 06:29 AM
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you guys are amazing.
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Old Feb 14, 2005 | 08:03 AM
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Originally Posted by shinybluecls


this dyno of a stock tl type s before and after with the spacers. Opinions? You guys think this is accurate? If so....the price is more than worth it imo
'01 TL Type-S?
Still, that shows almost 10hp gain..in places, for $101...nice.
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Old Feb 14, 2005 | 08:16 AM
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Something is WAY off on that dyno. There is NO WAY the torque curve is accurate. And it also appears as if the test vehicle has an IMRC problem. There shouldn't be such a huge drop in horsepower after 5000 rpms. The torque curve starts off WAY too high and also drops off too soon and WAY too much.

Here's my dyno when I was N/A:



Now based upon the IAT readings allmotor gathered, these spacers do exactly what they are supposed to, although I wouldn't trust that dyno. It does not appear to be from an Acura CL-S. It also stops well before 7000 rpm. The J32A2 is rated at 222 ft-lbs of torque, yet this car is making 220 ft-lbs at the WHEELS.
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Old Feb 14, 2005 | 09:32 AM
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Originally Posted by mrsteve
Something is WAY off on that dyno. There is NO WAY the torque curve is accurate. And it also appears as if the test vehicle has an IMRC problem. There shouldn't be such a huge drop in horsepower after 5000 rpms. The torque curve starts off WAY too high and also drops off too soon and WAY too much.

Here's my dyno when I was N/A:



Now based upon the IAT readings allmotor gathered, these spacers do exactly what they are supposed to, although I wouldn't trust that dyno. It does not appear to be from an Acura CL-S. It also stops well before 7000 rpm. The J32A2 is rated at 222 ft-lbs of torque, yet this car is making 220 ft-lbs at the WHEELS.
260/232 crank stock
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Old Feb 14, 2005 | 09:37 AM
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Originally Posted by typeR
260/232 crank stock

Typo.


Still, IMO... that dyno isn't from a CL-S or a J32A2 for that matter.
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Old Feb 14, 2005 | 09:44 AM
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The Outlaw dyno shows the car making 130whp at 3500 rpm. My modified CL-S only shows 120whp. At 4500 the Outlaw dyno shows the car making 180whp, my car is only making a little over 150whp. The Outlaw dyno shows peak whp at 5000 rpms. We all know our cars don't make peak power until closer to 7000.



Guys who plan on buying this mod, base your performance increase on allmotor's IAT readings and NOT on the Outlaw dyno.
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Old Feb 14, 2005 | 09:56 AM
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btw 4800 ish is when the vtec change over occurs or is supposed to occur it looks as if this car is having a problem there...perhaps low oil
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Old Feb 14, 2005 | 10:01 AM
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Originally Posted by typeR
btw 4800 ish is when the vtec change over occurs or is supposed to occur it looks as if this car is having a problem there...perhaps low oil

Are you refering to the dyno I posted or the Outlaw dyno? My dyno is only for comparison of what a J32A2 dyno should look like and as you can see, the two are very different.

I'm assuming the dyno I posted because of the eratic curve around 4800 rpm. No idea why that occured. No oil leaks, nor have I ever had oil level issues.
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Old Feb 14, 2005 | 10:18 AM
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I don't trust dyno-plots by any vendor, so just go by true measured data. The spacers certainly make a difference in intake-manifold temperatures. Due to physics, that should translate to a cooler intake charge hence more power.

I don't think Outlaw dyno'd every type of J-series motor. I am pretty sure they dyno'd one J-series (3.5 or 3.2 or whatever) with unknown modifications and are using that plot as a general representation of all J-series.
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Old Feb 14, 2005 | 10:27 AM
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Originally Posted by allmotor_2000
I don't trust dyno-plots by any vendor, so just go by true measured data. The spacers certainly make a difference in intake-manifold temperatures. Due to physics, that should translate to a cooler intake charge hence more power.


I don't think Outlaw dyno'd every type of J-series motor. I am pretty sure they dyno'd one J-series (3.5 or 3.2 or whatever) with unknown modifications and are using that plot as a general representation of all J-series.
to some extent. Still looks wacky to me.
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Old Feb 14, 2005 | 11:17 AM
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Nice Ram,
I'm going to get the kit soon and once my E-manage issue solved (hope this week) I'll put them asap.
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Old Feb 14, 2005 | 11:23 AM
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would the spacers void any part of the factory warranty?
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Old Feb 14, 2005 | 11:44 AM
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Originally Posted by jipper
would the spacers void any part of the factory warranty?
Not sure... but then if you are worried about factory warranty(s), then don't mod. I think it only affects emissions to some slight degree. And that is only during warm-up.
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Old Feb 14, 2005 | 11:54 AM
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so this is ~ a 2 hour install?
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Old Feb 14, 2005 | 12:01 PM
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Originally Posted by mattg
so this is ~ a 2 hour install?
If you do it when the motor is cold, its less than 2 hours. You do have to
remove your intake, TB and entire intake-manifold for this... so I'd say if the car was hot and you took your time... 2hrs. There are four studs that need replacing and if those are stuck, then you are looking at more time
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