dohc

sohc_rida · Post by **sohc_rida** » Sat Jan 26, 2008 3:28 pm

i have a 2003 neon se i wanna change the head from single to a 98-99 dual head will it work

esteinmaier · Post by **esteinmaier** » Sat Jan 26, 2008 4:13 pm

In short, no. With lots of other changes, yes.

sohc_rida · Post by **sohc_rida** » Sat Jan 26, 2008 4:16 pm

so u boosted the single

Nutmeg · Post by **Nutmeg** » Sat Jan 26, 2008 4:40 pm

You can, yes. Use the search function.

Post by **occasional demons** » Sun Jan 27, 2008 12:48 pm

In short you will need to change the cam drive system (timing belt and related parts) and the main snag is getting the cam position sensor clocked correctly to jive with your SOHC PCM or I think you gould go with MS? But like nutmeg said, search DOHC with SOHC PCM and you should find a thread or two...

03blackrt · Post by **03blackrt** » Sun Jan 27, 2008 1:02 pm

It can be done. Relativly easy too. I'm surprise more don't do it.

Cbussilver01es · Post by **Cbussilver01es** » Sun Jan 27, 2008 3:19 pm

http://forum.2gn.org/viewtopic.php?t=20132
^Read that

It can be done, the main PITA is the Pcm because of the fuel curve at higher rpms, BUT since I know of a couple of ppl that ran a 2.4 dohc with a sohc pcm, I know that it can be done, when I get money, Im going to try the head swap and bolt up my Srt turbofold to it.

Arro · Post by **Arro** » Mon Jan 28, 2008 3:21 pm

If I'm feelin' this guy out right....

I'll just say this and head it off at the pass: you don't want to first convert to DOHC, like say out of a 1GN or a Stratus, and then try to turbocharge that. You'll be far better off with an SRT-4 swap, and although it's much more involved, the components are better suited for turbocharging.

Like what was said before, you need to search, or just do lots of reading. You aren't asking bad questions, just n00b ones.

Cbussilver01es · Post by **Cbussilver01es** » Tue Jan 29, 2008 12:58 am

Arro wrote:You'll be far better off with an SRT-4 swap, and although it's much more involved, the components are better suited for turbocharging.

^That is the truth, but see Im on a this thing called a budget lol I don't have 4k to spend on an srt motor, pcm, harness, skim, intercooler injectors.. etc. etc... ( I wish)

Im really gonna do this swap just to see how it runs and to give ppl an idea of things like:

• How well it runs with the SOHC pcm
• What sensors did I have to replace
• How lean it will run at the higher rpm range
• How well it responds to Forced induction... blah blah blah

since no one that Ive noticed yet has a definite answer except clark(Jelloman457) seein as he did the 2.4 dohc (and he has not logged into 2gn since august) and besides Howells old car, Clark and one of the guys on neons.org are the only ppl that have done it. Im not tryin to be a dick or anything or step on anyones toes.. I just have a turbofold and oil and coolant feed and return that I basically got all for free, and since Mattdog doesnt make adapters anymore that kinda leaves all the 2gn ppl (with the srt turbofold) high and dry with little options for a turbo set up except Esteinmaier's kit or Hahn kit, or your own DIY set up. I just want more options since no one has picked up the ball on making more adapters yet

Bottom line, my motto is to work with what I got, and I really dont want to get rid of the turbofold after I got it for free, Thats why Im so hell bent on seeing me or someone else try it and boost it using MS or the RRFPR route.

Sorry to write a novel, I just want there to be more help and options for us in the 2gn community!

Arro · Post by **Arro** » Tue Jan 29, 2008 3:37 am

i write my own novel-length posts on here, so no worries... but I have to say, 4k for a swap is cheap! If you're planning to do *any* kind of swap and you're on a tight budget... maybe this isn't such a good idea, unless you have a second beater car tol drive.

hul kogan · Post by **hul kogan** » Tue Jan 29, 2008 10:58 am

Cbussilver01es wrote: since no one that Ive noticed yet has a definite answer except clark(Jelloman457) seein as he did the 2.4 dohc (and he has not logged into 2GN since august) and besides Howells old car, Clark and one of the guys on neons.org are the only ppl that have done it.

i am close to being able to answer your questions, Sean. very soon...

Cbussilver01es · Post by **Cbussilver01es** » Tue Jan 29, 2008 12:10 pm

hul_kogan wrote: am close to being able to answer your questions, Sean. very soon...

YAY!!!!!

Arro wrote:unless you have a second beater car tol drive.

Which in this case I do, lol it just doesnt run right now.. thats all

But hell I know where I can get a complete 2.4 Head or 2.0 head for about $50 a 1st gen dohc intake manifold for about $50 I already have a 1st gen throttle body, valve cover for $35-$150. And Im already halfway there, my rebuilt shortblock came from a 98 R/T so I wouldnt have to worry about the pistons right now! Lol Im quite aware of what is envolved, hell Ive been racking my brain thinkin and researching about the head swap for the past 2 years.

If there is one good thing about living in Ohio, it's that there is no emissions testing, so we are able to have a lil bit more give into the mods we can do. I sure am glad we dont have testing like California does!

hul kogan · Post by **hul kogan** » Tue Jan 29, 2008 12:33 pm

Cbussilver01es wrote: I sure am glad we dont have testing like California does!

indeed!

SGT BRAD · Post by **SGT BRAD** » Tue Jan 29, 2008 12:50 pm

from experience with the all motor thing as well as comparing dohc to sohc, i ask the question why? if i had it to do over again i'd do the srt swap stage II and be at 300hp w/o nitrous. it'd still be easily driveable. even an inexpensive turbo set-up on a sohc stock block is going to make more hp than a fully built all-motor dohc. it's just a fact. i had my own reasons for doing what i did and it's fun. but, it's not been easy and certainly not cheap. if you're looking for dd and moderate hp then i'd seriously consider doing a simple turbo. i know it's not "different" and everyone seems to have done one. but, it's an inexpensive way to make good useable hp. after having fabbed bunches of parts for my car to work i wonder why anyone else would want to do it on a dd.

Cbussilver01es · Post by **Cbussilver01es** » Tue Jan 29, 2008 1:08 pm

SGT BRAD wrote:even an inexpensive turbo set-up on a sohc stock block is going to make more hp than a fully built all-motor dohc.

Well yea thats a given. lol Idk about sohc_rida and his plans for his car.

I just want to do it or have someone else do it so instead of talking to a person about what would "have to be done" we could talk to some one about what "was done". BTW I saw your posts over on Howells forum SGT BRAD about the black 2gn but besides that lil convo that you had with him over there, I couldn't find anymore info about the car. I just wanted to utilize my turbofold that I have without having to buy another turbo and sohc manifold, and since mattdog cant really afford to do adapters anymore, thats the only reason why I'm so interested in it. If he was still making the adapters I sure wouldn't be so concerned with it.