Hudson_Neon's head project... IS RESURECTED!

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 12, 2007 4:46 pm

ok, so i found this sittin in the back of the shop yesterday. we were kinda slow and the boss had us cleaning. he wanted to just throw it. but i said that i could take it off his hands for him. and so the journey begins. it's got plugs and all still in it. this should be fun.

Post by **racer12306** » Mon Nov 12, 2007 4:49 pm

So you just found a SOHC head just sitting there? Thats awesome.

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 12, 2007 5:47 pm

yeah, it's off a 96 though. i shouldn't have any problems though right? i'm putting ALL new internals in it.

little update. i got started on cleaning everything. and yet another head with a stamping on the inside. i found out that my dad cleaned out his tool box and didn't know what a tool was so he just threw it. turns out it was my valve spring compressor. so i gotta go get a new one, with his money : ) i'll be getting a nice one this time. can you say Snap-On? gotta pick up some more brake cleaner/carb cleaner while i'm out tomorrow too.

03blackrt · Post by **03blackrt** » Mon Nov 12, 2007 7:48 pm

Sweet deal

I'd be sure to check the head over good before doing much work. Warpage, cam journals, ect...

You'll need to get an EGR blockoff plate to run the head on your car.

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 12, 2007 8:26 pm

it's actually in good condition. i guess the only reason that it came off the car was cause they needed a look inside.

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 12, 2007 10:52 pm

ok, i opened up the first port. i opened the exhaust port .25" bringing it to a grand total of 1.313". gonna do a second one tonight and call it quits.

03blackrt · Post by **03blackrt** » Mon Nov 12, 2007 11:06 pm

Looking good sofar, keep us updated.

Just a side note, a half-round metal rasp does a good job keeping the port openings round and not all lop-sided; although your's look nice and round

Post by **racer12306** » Mon Nov 12, 2007 11:17 pm

Do you have access to a flow bench?

The best way to port a head is to set it up on a flow bench so that all the ports flow the same, regardless of size.

Hudson_Neon · Post by **Hudson_Neon** » Tue Nov 13, 2007 12:09 am

no, i don't have access to a flow bench. i wish i did. oh, and i made a mathmatical mistake. the new size is 1.438" not 1.313". my bad.

got the second one done. this is for sure a task. i know the mating surface looks a little rough as do the ports. but it's all gonna get cleaned up in the end

as i was doing this one i got to thinking.

should i go with new stock 2gn valves and retainers or go with the INDY valves from modern and use the retainers that are in THIS head?

Hudson_Neon · Post by **Hudson_Neon** » Tue Nov 13, 2007 11:33 pm

ok, so i finished the porting of the exhaust ports. still need to do the polishing. i also borrowed a half assed valve spring compressor from my boss. and got SOME of the springs out. i've done some thinking. and i'm gonna just order the top end performance rebuild kit from modern and get some new valves and valve guides and some other seals and such from the dealership.

Hudson_Neon · Post by **Hudson_Neon** » Thu Nov 15, 2007 12:20 am

ok, got the rest of the valves out tonight. and when i was cleaning up around the valve seats i noticed the REALLY rough castings. so i started smoothing out the castings in there. got one set done. i think i'll do ALL of the porting before i even worry about the polishing.

Hudson_Neon · Post by **Hudson_Neon** » Thu Nov 15, 2007 11:19 pm

ok, well i found 2 more casting numbers or something inside tonight. and started a little on an intake port because i didn't wanna risk screwin up the valve seats with what my grinding stone had been reduced to. snap-on stops by work tomorrow so i'm gonna talk to him about a carbide bit set. their site lists a set at $105 but the snap-on guy is usually cheaper.

Hudson_Neon · Post by **Hudson_Neon** » Fri Nov 16, 2007 8:20 pm

ok, so i got ANOTHER new toy to help speed this process up. and by doing so i really don't know if i need to polish it. this thing leaves very minimal markings. the marks look a ton worse in the pics than in person. but either way the porting is done. now to figure out how to get the valve guides out. this should be fun. anybody done this on a neon before?

BlackRoseRacing · Post by **BlackRoseRacing** » Mon Nov 19, 2007 6:41 am

When I had time to do head work I found a dremel with the long snake attachment:
http://www.dremel.com/DremelCMS/Pop-ups ... 6226&tab=1
Works great for tight corners and its easier to control than a big bulky tool like you posted above.
As far as a flow bench is concerned, why not make one?
All you really need is something to seal the comustion chamber and flow air through the ports and have a meter of some type to measure CFM...

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 19, 2007 8:50 am

the tool i got posted above isn't actually all that bulky though. it's only about 5" long and depending on how far out i put the bur 3-4" the other way. but yeah. i gotta find a dyno so i can do a before and after. we'll see how much the NGC can actually control. i should be done by christmas. that way i'm only spending spare money not car payments and such.

Hudson_Neon · Post by **Hudson_Neon** » Mon Nov 19, 2007 5:45 pm

ok. well i got all the valve guides out. next on the list is the rest of the stuff from napa. i need a new one of those barbs for the coolant, and i'm ordering a new timing belt from napa. it's supposed to be higher quality and it has a blue backing on it.

then there's the stuff from modern. i'm gonna be picking up a crane 12, crane springs, a head gasket set, and indy valves sense i already have the proper valve keepers.

blue demon02 · Post by **blue demon02** » Tue Nov 20, 2007 1:39 pm

if you are wanting to stay in the stock rpm range a comp 400 would be better.

Hudson_Neon · Post by **Hudson_Neon** » Tue Nov 20, 2007 4:26 pm

i'm not too worried about the rpm range. 1500 isn't that bad in my eyes. and that's only if i can't work it down a little with an adjustable cam gear

neon12sec · Post by **neon12sec** » Sat Nov 24, 2007 9:14 pm

Hope you plan on making a custom header for that head, or else your not going to see much gains due to reversion.

Hudson_Neon · Post by **Hudson_Neon** » Sat Nov 24, 2007 11:56 pm

i'm gonna port out my pacesetter header when i pull the head to put the new head in

Hudson_Neon · Post by **Hudson_Neon** » Sat Dec 01, 2007 2:22 am

well, i did some workin on the car tonight and i figure i'll order an MPx uderdrive pulley considering the stock one is coming off for the new timing belt. and i'm waiting for some money to really start rolling in and then i'll order what i need. but untill then i figure i'll do some more buildint. can you guys guess what it will be with this pick of a rough outline?

Hudson_Neon · Post by **Hudson_Neon** » Sat Dec 01, 2007 11:11 pm

so tonight i cleaned up the ports and such with 60 grit drums and then 120 grit drums. i also cleaned up the mateing surfaces a bit

Hudson_Neon · Post by **Hudson_Neon** » Sun Dec 02, 2007 12:02 am

oh yeah, and i think that this is just lookin like pure sexyness

Hudson_Neon · Post by **Hudson_Neon** » Sun Dec 09, 2007 12:37 pm

well i screwed up big time. guess you live and learn. we'll do better next time

Wenuden · Post by **Wenuden** » Sun Dec 09, 2007 12:49 pm

Further explantion necessary, please.

Hudson_Neon · Post by **Hudson_Neon** » Sun Dec 09, 2007 1:28 pm

well i pretty much explained it in my "Mag head" thread in the general discussion. just a warning... i was kind of pissed off. i'm lookin at pickin up another one for $20

http://forum.2gn.org/viewtopic.php?t=27063

03blackrt · Post by **03blackrt** » Sun Dec 09, 2007 2:31 pm

Since the head is toast, you should cut it up. Run a band saw or hack saw right down the middle of cylinder. That way you'll learn were all the water passages are for when you port your next head.

Hudson_Neon · Post by **Hudson_Neon** » Sun Dec 09, 2007 2:50 pm

that's not a bad idea. then i can max out the next one

jckevns · Post by **jckevns** » Sun Dec 09, 2007 3:14 pm

03blackrt wrote:Since the head is toast, you should cut it up. Run a band saw or hack saw right down the middle of cylinder. That way you'll learn were all the water passages are for when you port your next head.

do it and make sure you take lots of pics

Hudson_Neon · Post by **Hudson_Neon** » Sun Dec 09, 2007 4:44 pm

will do