FlameShadow Posted January 14, 2015 Share Posted January 14, 2015 I have a question specific to the parts I have, and can't seem to find a definite answer.Can I use the internals of a n47 head in a p90 head put it on a n42 block and then with all the appropriate parts(turbo manifold, turbo ect) have a good running engine, or will this not even work? Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 14, 2015 Share Posted January 14, 2015 The valves are of different length so those won't swap. The P90 might have hydraulic pivots, which would be an issue (see below). The cams might swap but make sure the rocker arms come over in the same positions. Lots of ways to go wrong. Quote Link to comment Share on other sites More sharing options...
FlameShadow Posted January 14, 2015 Author Share Posted January 14, 2015 Oh thanks for the video. The head I have is p90a actually I just said p90 because essentially that's what it will be in the end.thanks for the jnfl Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 14, 2015 Share Posted January 14, 2015 I don't know what a "jnfl" is. P90A does not necessarily mean hydraulic. Quote Link to comment Share on other sites More sharing options...
FlameShadow Posted January 14, 2015 Author Share Posted January 14, 2015 Sorry meant info, on my phone currently so it auto corrected. I thought that was the only difference between p90 and p90a heads was the lifters. Quote Link to comment Share on other sites More sharing options...
josh817 Posted January 15, 2015 Share Posted January 15, 2015 (edited) You can look to see what type you have real fast. You will need a Timesert threaded.... helicoil thing. I forgot the part number but found mine on Amazon many moons ago. Converts from the threads inside the head to the threads of the solid lifter. Install solid lifters real tight. Use solid lifter cam. Vroom Edited January 15, 2015 by josh817 Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted January 15, 2015 Share Posted January 15, 2015 Sorry meant info, on my phone currently so it auto corrected. I thought that was the only difference between p90 and p90a heads was the lifters. Some of the P90A heads have been found to have solid lifters. It's thought that the some of the first ones went through before the switch. That said, it doesn't seem to be very common. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted January 15, 2015 Share Posted January 15, 2015 Some of the P90A heads have been found to have solid lifters. It's thought that the some of the first ones went through before the switch. That said, it doesn't seem to be very common. This is true, I have a P90A with solid lifters. Quote Link to comment Share on other sites More sharing options...
FlameShadow Posted January 15, 2015 Author Share Posted January 15, 2015 My p90a head is missing everything's that's why I was wondering if I could transfer from a n47 head and have a functional engine. Or would It just be easier to use the n47 Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted January 15, 2015 Share Posted January 15, 2015 My p90a head is missing everything's that's why I was wondering if I could transfer from a n47 head and have a functional engine. Or would It just be easier to use the n47 It sounds to me like the valves and the lifter pivots are going to be a problem. Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 15, 2015 Share Posted January 15, 2015 It's been described several times that running the 8.3 CR engine (dished pistons with N42 or N47 head) in turbocharged fashion is not really a problem. Assuming Megasquirt or some other tunable engine management. So it will work. And would be much easier and cheaper than getting the P90A back in shape. One downside that you might hear about is the liners in the N47 exhaust ports and the possibility of losing one and damaging the turbo. If you don't know much about the P90A head, it would be worthwhile to ask why anyone would strip the hardware and let the head go. The simple reason is that it's damaged, either warped or cracked,and someone salvaged what they could. Quote Link to comment Share on other sites More sharing options...
FlameShadow Posted January 15, 2015 Author Share Posted January 15, 2015 PO stripped it for extra valve train parts. Didn't want to keep the head as far as I know. Quote Link to comment Share on other sites More sharing options...
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