texanredneck Posted April 27, 2009 Share Posted April 27, 2009 My uncle said that i should be able to swap a turbo head on to my 82' N/A L28 what should i look for and on the P90 which head is better to use the hydraulic lifter head or the other? Also curious on how to swap the electronics of the non trubo afm to the turboed afm housing? (supposed to be bigger?) Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted April 27, 2009 Share Posted April 27, 2009 How high do you want to crank the engine? If over 6.5K then go P90, not the hydraulic. Before anyone lambastes me on this, the stock cam isn't good for close to this, and if you want a cam that IS, then go with the mechanical. Both have the same size combustion chamber, but you will need to get a different exhaust manifold to match the exhaust ports - the manifold from an N42 I believe.... Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted April 27, 2009 Share Posted April 27, 2009 I'd suggest keeping the NA AFM, I don't know how a bigger AFM relates to more power, so it would be rather daft in my opinion. Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 27, 2009 Author Share Posted April 27, 2009 (edited) I figure enlarging the first obstacle will allow more air to be pulled to the throttle body so if i get a big bored throttle body it wont be in vaine. And thank you for that info on the cam now the stock cam of the p90 wont be good for higher rpms right? Also do you think the header for the n42 will work with my s130 style steering? Edited April 27, 2009 by texanredneck Didn't see the first post, for this thread. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted April 28, 2009 Share Posted April 28, 2009 Stock mechanical turbo cam good to ~6.2k. But if you go mechanical you can get a better cam than the stock ones - esp. if you're NA. Couldn't say about the header.... Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 Well thank you very much you've been a big help. Also when i do a cam upgrad don't i have to upgrade the valve train aswell? And the timing gears on the cams are the same from the N/A cam to the turbo cam? Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted April 28, 2009 Share Posted April 28, 2009 A cam can range from ~ $500-$1000 for the entire kit. Are you trying to build a quick NA motor? From what I've heard the 'bang for the buck' is nothing compared to a turbo swap. Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 So your saying the turbo swap would be a better bet? Quote Link to comment Share on other sites More sharing options...
woldson Posted April 28, 2009 Share Posted April 28, 2009 If your not going turbo, now or in the future, the p70 head will fit your needs just fine. A n/a cam and turbo cam have different applications (aftermarket). So you really have to decide for youself. Honestly, most upgrades will cause problems with fuel mixures on stock stuff. Getting a ECU, or atleast a wideband O2 sensor will probaly be needed frist. P90a can be made into a p90 useing the parts from your p79 and timeserts. The cam in a p90a can NOT be used in a solid lifter application, the p79 cam can. Just putting a p90 "turbo head" on your engine will not produce any noteable gains. Post a buget, and some goals would help. You may find you will have to do some searching. Good luck:) Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 I thought the valves and ports on the turbo head were bigger than that of the N/A head and what does the P70 offer that makes it a better match than the p90?? And your saying i could take a p90 and swap cams? Quote Link to comment Share on other sites More sharing options...
attworth Posted April 28, 2009 Share Posted April 28, 2009 Sticky from the L6 forum (the one you're in.) It's at the very top. I'd recommend reading it. http://forums.hybridz.org/showthread.php?t=129066 It will answer most of your questions. Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 I was told to post a budget and goals but i don't have a budget i just buy part by part. But my goals are i want this motor to deff rev higher and produce a great amount of power but i want to be able to drive it out side of the strip. Emissions is not an issue for me. Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted April 28, 2009 Share Posted April 28, 2009 If you don't have a set goal you will be buying parts you won't need or use down the line and will be wasting money. How long have you owned the car? Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 almost 2 years as a daily driver Quote Link to comment Share on other sites More sharing options...
Pyro Posted April 28, 2009 Share Posted April 28, 2009 The P79 head and the P90 head will run about the same. There is no need to change the P79 head. If you what more rpms then add a cam with more duration and lift. The turbo cam has even less duration than the NA cam. (around 8 degrees less) I would just send your stock cam and rocker arms to DeltaCams for a cam regrind and rocker-arm resurface. Then install some 0.160" lash pads from Courtesy Nissan (Dallas, Texas). You can get the cam and rockers done for $110.00 and the lash pads for $36.00. So about 150.00, your engine will have a cam with more duration and lift. I would only use a 260/260 degree cam with about 0.425" with stock springs and stock efi. A stock L28 cam is around 248 degrees and 0.400". 12 more degrees and 0.025" more lift will be good for another 750 or maybe 1000 rpms of power band. A 2-1/2 exhaust system would also help use zddp oil additive with the new cam (http://www.zddplus.com) Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted April 28, 2009 Share Posted April 28, 2009 Do you have another car now? 'Swapping cams' and other things like that might involve a bit more time and work than you are thinking right now. Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 Yes I do have a back up car to drive i figure this car will be down for a while if not a year so I can work the bugs out of it and stuff. So i do deff have time thats not an issue. Also do you know where i can find a custom intake. I heard there were manufacturers that make them would you know where to start? Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted April 28, 2009 Share Posted April 28, 2009 Yes, as a matter of fact I do. There is a little button on the top blue strip on every page called the 'search' button, and most of your questions are already answered somewhere in the forum. I'd also advise reading the stickies, there is really good information in them. Quote Link to comment Share on other sites More sharing options...
texanredneck Posted April 28, 2009 Author Share Posted April 28, 2009 Thanks your information has been more than helpfull and im still getting used to how this site is set up. Quote Link to comment Share on other sites More sharing options...
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