Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+?
11-21-2002, 04:18 PM
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Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? Thinking about adding a semi-custom direct port n2o setup to the car, utilizing a 150 shot....and yes on the stock bottom end. <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />
I'm wondering if I will have too much cylinder pressure with the TR230 cam and the direct port kit. I know Patrick G sprayed a 100 shot on his....but I'm looking to step it up a bit...
<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
<small>[ November 21, 2002, 04:56 PM: Message edited by: verbs ]</small>
I'm wondering if I will have too much cylinder pressure with the TR230 cam and the direct port kit. I know Patrick G sprayed a 100 shot on his....but I'm looking to step it up a bit...
<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
<small>[ November 21, 2002, 04:56 PM: Message edited by: verbs ]</small>
11-21-2002, 06:01 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? This would be interesting to know how the reverse split works with N2O. Ive been watching all your posts and I dont think anyone knows <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
11-21-2002, 06:33 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? That camshaft will be fine with a 100-150 shot. The key with nitrous is not to turn it on at too low of an RPM. Cylinder pressure will be excessive at very low RPMs. You want to keep BMEP (brake mean effective pressure) less that 300. You should be fine anywhere above 3000 RPMs.
I was running a 150 shot (TNT) with Stage II H/C (226/234) @ ~11.2:1 CR. I used a window switch to keep the nitrous off below 3000 RPMs. I did have a 4500 TC so it really wasn't an issue anyways.
Detonation of course will quickly make all this meaningless. A stock bottom end will not survive long if there is detonation.
One more thing... I would recommend not going reverse-split if you are looking to maximize N20 performance. The reverse splits really don't buy you much anyways.
Tim
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<small>[ November 21, 2002, 06:39 PM: Message edited by: TimZ28 ]</small>
I was running a 150 shot (TNT) with Stage II H/C (226/234) @ ~11.2:1 CR. I used a window switch to keep the nitrous off below 3000 RPMs. I did have a 4500 TC so it really wasn't an issue anyways.
Detonation of course will quickly make all this meaningless. A stock bottom end will not survive long if there is detonation.
One more thing... I would recommend not going reverse-split if you are looking to maximize N20 performance. The reverse splits really don't buy you much anyways.
Tim
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<small>[ November 21, 2002, 06:39 PM: Message edited by: TimZ28 ]</small>
11-21-2002, 07:05 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TimZ28:
<strong>One more thing... I would recommend not going reverse-split if you are looking to maximize N20 performance. The reverse splits really don't buy you much anyways.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm not looking to to maximize nitrous output at all. I'd rarely use it (thats what I say now).....The reverse split cam is already in the car and I don't plan on taking it out any time soon. I'd rather have more power all motor which is how I drive 99.999% of the time than for a few seconds a week on spray.
<small>[ November 21, 2002, 07:07 PM: Message edited by: verbs ]</small>
<strong>One more thing... I would recommend not going reverse-split if you are looking to maximize N20 performance. The reverse splits really don't buy you much anyways.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm not looking to to maximize nitrous output at all. I'd rarely use it (thats what I say now).....The reverse split cam is already in the car and I don't plan on taking it out any time soon. I'd rather have more power all motor which is how I drive 99.999% of the time than for a few seconds a week on spray.
<small>[ November 21, 2002, 07:07 PM: Message edited by: verbs ]</small>
11-21-2002, 09:58 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? So it would be wise to set the nitrous to come on after peak torque? In my case ~4600rpm is where I make peak tq. Have the window set for 4700-6400?
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11-22-2002, 08:47 AM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? The TR 230/224 cam is fine on nitrous. Just look at ScottyG's dyno numbers, they rock. I'm more in favor of running a bigger shot of nitrous with a progressive controller. Start with a 100 shot at 3000 rpms and ramp up to a 300 shot by 6000 rpms. Your shortblock will live a lot longer if you don't go to the max until well above peak torque.
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11-22-2002, 09:00 AM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Patrick G:
<strong> Start with a 100 shot at 3000 rpms and ramp up to a 300 shot by 6000 rpms. Your shortblock will live a lot longer if you don't go to the max until well above peak torque.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">300 shot on top of a heads/cam car!!! On a stock block!!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
I'd love to give that a whril, but 750rwhp/950rwtq or so on a stock block doesn't seem like it'd last very long!!
<strong> Start with a 100 shot at 3000 rpms and ramp up to a 300 shot by 6000 rpms. Your shortblock will live a lot longer if you don't go to the max until well above peak torque.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">300 shot on top of a heads/cam car!!! On a stock block!!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
I'd love to give that a whril, but 750rwhp/950rwtq or so on a stock block doesn't seem like it'd last very long!!
11-22-2002, 06:28 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? Speedtek sprays a 300 shot on their F1 cam, which is a reverse split cam.
11-23-2002, 04:21 AM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by WMSuperSport:
<strong>Speedtek sprays a 300 shot on their F1 cam, which is a reverse split cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">on a stock bottom end? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
<strong>Speedtek sprays a 300 shot on their F1 cam, which is a reverse split cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">on a stock bottom end? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
11-23-2002, 06:50 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? I did a 99 vette H/C car that makes 375 rwhp on motor and makes 535 rwhp on nitrous. Ive had a 250 NX wet single fogger kit on it for two years, through hundreds of passes and 30k miles.
12-11-2002, 11:16 PM
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Re: Does TR230/224 cam create too much cylinder pressure for big nitrous shots of 150+? I dont know what is to much - but I am running an MTI X1 cam - 230/224 and here are my results after testing each cylinder - and I am told that my "readings" are pretty high..
Maybe you guys can comment if these are too high for a 1fitty shot..
O-yea I have MTI S2 heads too...
1-225/225
2-215/230
3-225/220
4-210/215
5-215/230
6-210/220
7-215/220
8-210/215
Hope this helps..
Maybe you guys can comment if these are too high for a 1fitty shot..
O-yea I have MTI S2 heads too...
1-225/225
2-215/230
3-225/220
4-210/215
5-215/230
6-210/220
7-215/220
8-210/215
Hope this helps..
