QTP Header System Pics
http://www.quicktimeperformance.com/headers.htm for a complete info and more pics.
Now time for pics
<img src="http://www.quicktimeperformance.com/Headers/headerdisplaymed.jpg" alt=" - " />
<img src="http://www.quicktimeperformance.com/Headers/headerdisplay.jpg" alt=" - " />
Headers on the JPR All Bore 382 Motor. Now thats a thing of beauty. <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" /> JPR
<img src="http://www.quicktimeperformance.com/Headers/headerpass-med.jpg" alt=" - " />
<img src="http://www.quicktimeperformance.com/Headers/headerdriver-med.jpg" alt=" - " />
Picutre of our QTEC Style Y Pipe
<img src="http://www.quicktimeperformance.com/QTEC/Ypipe2_small.jpg" alt=" - " />
A little video of my car with the QTP Header System and Dual QTEC Y Pipe breaking in a new set of nittos. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
http://www.quicktimeperformance.com/...maroRoast1.mpg
1 3/4" Emissions Style(EGR/AIR)-$799.99
1 3/4" Race Style-$729.99
1 7/8" Race Style-$829.99
QTP OffRoad Y Pipe $310.00
QTP QTEC Off Road Y Pipe-$600.00.
A cat style y pipe is in the works.
Any questions feel free to call me.
Enjoy!
<small>[ November 20, 2002, 08:51 PM: Message edited by: Quick Time ]</small>
Its a 226/230 cam with QTP headers, QTEC Y pipe going into a SLP Dual/Dual exhaust. When its closed its quiet!
Boo Yeah
The reason for where the cutout is where its at becuase thats the highest pressure area on the y pipe. Secondly, rclearance and room is an issue else where. You dont to bang or scrape. I made one y pipe like you descibed and it would get caught on a trailer. Thats why you see everything the way it is.
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I was wondering what your rwhp gains are on a car with intake and 220/220 cam? Nice vid, i think ill be buying a pair in the next few weeks. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
<small>[ November 21, 2002, 06:01 PM: Message edited by: 02smknSS ]</small>
I may do a little dyno testing before and after the QTPs with this setup...
Underdrive pulley
FTRA kit
MTI lid
Descreened MAF
C/F driveshaft
!Cats
Then add 1 3/4" QTPs, 3" Y-pip, 4" collector, 3.5" reducer, 3.5" I-pipe, 3.5" QTP electric cuttout (closed and then open.)
Any guesses what kind of RWHP increase we'de see?
<strong>Stangkiller
Boo Yeah
The reason for where the cutout is where its at becuase thats the highest pressure area on the y pipe. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How did you determine that was the higest pressure area?
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Quick Time:
<strong>Stangkiller
Boo Yeah
The reason for where the cutout is where its at becuase thats the highest pressure area on the y pipe. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How did you determine that was the higest pressure area?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Simple fluid dynamics, or you can even use Newtons laws. An object in motion will try to remain in motion and not change direction, so the exhaust gasses would rather go straight out the cutout than turn through the Y-pipe. Much simplified of course, but you get the idea <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ November 28, 2002, 08:12 PM: Message edited by: Fenris Ulf ]</small>
Thanks! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Interestingly, I was reading the other day that because of the fireing order of the SBC (and the LS1 as well so I've heard) that a true tuned header system is only possible by using a set of headers that have primaries from each side sharing collectors. That is that one or more primaries from each bank dump into the collectors on the opposite side of the engine. This is obviously NOT possible with the K-member arrangement of the F-body. I also read that because of this situation that true equal length headers make only a very small difference in power and during only a small RPM range. Primary lengths varying by 8" or more show hardly any loss over true equal length headers. It was suggested thatthe most important (and most overlooked) variable was collector diameter and length.
Maybe all of this is hogwash but it's what I read. I'll see if I can dig it up if anyone else would like to read it.
<strong>You got anymore info on this (like where you cam about this info?) Gotta be some reason that the Grotts were somehow always a step ahead of all the others. What would be an example of an LS1 header that has no out of phase primaries?
Thanks! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Interestingly, I was reading the other day that because of the fireing order of the SBC (and the LS1 as well so I've heard) that a true tuned header system is only possible by using a set of headers that have primaries from each side sharing collectors. That is that one or more primaries from each bank dump into the collectors on the opposite side of the engine. This is obviously NOT possible with the K-member arrangement of the F-body. I also read that because of this situation that true equal length headers make only a very small difference in power and during only a small RPM range. Primary lengths varying by 8" or more show hardly any loss over true equal length headers. It was suggested thatthe most important (and most overlooked) variable was collector diameter and length.
Maybe all of this is hogwash but it's what I read. I'll see if I can dig it up if anyone else would like to read it.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What you read is true Colonel. Grots have the passenger side header out of phase. How do I know? Because I checked mine out before I put them on <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
An interesting setup would have the intake and exhaust ports flipped around so that the V8 would have two intake plenums where the headers would be, but the header tubes could scavenge from both cylinder heads easily where the stock intake is located. There are some obvious downsides to a setup, but something interesting to think about <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />


