# Neon and NT DSM bois and girls, school me on the 420a **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [November 29, 2005, 8:24am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092 "2005-11-29T08:24:43Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Daddie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/daddie/32/7621_2.png) [@Daddie](https://forums.speedlife.net/u/Daddie)\ **Post date:** [November 29, 2005, 8:24am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/1 "2005-11-29T08:24:43Z")
Like I know it’s not great But I have some toolbox telling me 300 WHP is easy on stock block And I haven’t seen anything more than 200WHP reliably. Are the sleeves shit? ---
**Author:** ![jltalon](https://avatars.discourse-cdn.com/v4/letter/j/6a8cbe/32.png) [@jltalon](https://forums.speedlife.net/u/jltalon)\ **Post date:** [November 29, 2005, 8:28am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/2 "2005-11-29T08:28:32Z")
Yeah Right the 420A maybe can put out 220-240 @ the wheels on 7-10 psi before going kaboom…and I can tell you from first hand experience. Ive seen kids with completely built all motor setups only putting down 150hp @ the wheels on [2gnt.com](http://2gnt.com) ---
**Author:** ![Daddie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/daddie/32/7621_2.png) [@Daddie](https://forums.speedlife.net/u/Daddie)\ **Post date:** [November 29, 2005, 8:33am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/3 "2005-11-29T08:33:36Z")
> [@jltalon](#): > > Yeah Right the 420A maybe can put out 220-240 @ the wheels on 7-10 psi before going kaboom…and I can tell you from first hand experience. > > Ive seen kids with completely built all motor setups only putting down 150hp @ the wheels on [2gnt.com](http://2gnt.com) what size turbo did you put on it ---
**Author:** ![eclipsed](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@eclipsed](https://forums.speedlife.net/u/eclipsed)\ **Post date:** [November 29, 2005, 9:25am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/4 "2005-11-29T09:25:48Z")
howie… i dont know if i will be able to return your phonecall today… as for your post, 300whp on a 420a is not EASY, built motor or not. what does this person mean by stock block? are we talking completely stock bottom end? in that case, laugh in his/her face for suggestikng 300whp on stock internals if they are saying stock block, like untouched block but forged internals and _good_ piston rings, then yes, it is feasible. POSSIBLE. but NOT easy. 200whp is attainable, but i wouldnt even say that is easy and reliable 300whp is attainable as well, but definitely not easy. weakest link on those motors is rings. simple as that. but also, detonation and fuel supply are big problems. 420a na to turbo is anything but plug and play. lots of trial and error, which to me does not = easy. ---
**Author:** ![Geoff](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/geoff/32/6104_2.png) [@Geoff](https://forums.speedlife.net/u/Geoff)\ **Post date:** [November 29, 2005, 9:45am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/5 "2005-11-29T09:45:07Z")
I’m getting what I consider to be ‘very good results’ with nitrous and mild fuel mod/management. And I’ve **never** had a reliability issue for the 3 years I’ve owned the vehicle. I’d like to get it on the dyno, but I’m estimating somewhere in the 200 -225 range, with the upper end being generous. I know that’s a pretty broad range, but with no base dyno #'s for my particular vehicle, it’s just an estimate. But, no reliability issues, compression is still A+ perfect. Everything that Sam said about the 420A is very true, regarding the rings and everything, as he has been there, and done that. :tup: ---
**Author:** ![Daddie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/daddie/32/7621_2.png) [@Daddie](https://forums.speedlife.net/u/Daddie)\ **Post date:** [November 29, 2005, 9:50am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/6 "2005-11-29T09:50:11Z")
NP, spank j00 heads designed by lotus? Is that true? Not that just because something is designed by somebody means it is automatically good. ---
**Author:** ![RacerX](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@RacerX](https://forums.speedlife.net/u/RacerX)\ **Post date:** [November 29, 2005, 10:23am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/7 "2005-11-29T10:23:25Z")
I’d say another weak point on this motor is the rod hardware. They seem to like to throw rod caps. I’ve seen a few 420a motors that have ventilated the side of the block. ---
**Author:** ![Bacon](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bacon/32/7230_2.png) [@Bacon](https://forums.speedlife.net/u/Bacon)\ **Post date:** [November 29, 2005, 10:24am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/8 "2005-11-29T10:24:22Z")
> [@Daddie](#): > > NP, spank j00 > > heads designed by lotus? > > Is that true? > > Not that just because something is designed by somebody means it is automatically good. Sounds like that someone is confused with the Turbo III motor used in the Spirit and Daytona… EDIT: R/T ---
**Author:** ![zwarbyt](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zwarbyt/32/7623_2.png) [@zwarbyt](https://forums.speedlife.net/u/zwarbyt)\ **Post date:** [November 29, 2005, 10:33am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/9 "2005-11-29T10:33:25Z")
head was NOT designed by lotus, this person is very confused and stock neon blocks handle 200-230 whp before they go rods not pistons ---
**Author:** ![jltalon](https://avatars.discourse-cdn.com/v4/letter/j/6a8cbe/32.png) [@jltalon](https://forums.speedlife.net/u/jltalon)\ **Post date:** [November 29, 2005, 12:10pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/10 "2005-11-29T12:10:06Z")
I threw a rod on two different motors…I was running a Star Stage II Turbo Kit with a Turbonetics T3/T4 Turbo, Spearco FMIC, Walbro255lph, Vortech SFMU, etc. etc. ---
**Author:** ![Daddie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/daddie/32/7621_2.png) [@Daddie](https://forums.speedlife.net/u/Daddie)\ **Post date:** [November 29, 2005, 2:06pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/11 "2005-11-29T14:06:41Z")
LOL this fucktard : Him: 420a is hardly a POS, theres a 420a powered neon thats over 1000hp and doesn’t have any block problems… of course this is considering its been completely built up from pistons to bearings but the core is extremely strong and the head is designed by lotus… Me: Wait. Are you saying the 420a head is designed by lotus? If you are you’re getting that confused with the spirit RT motor Him: dude its my car… ive researched enough, ive fucked with it enough and i know enough people with eclipses (stock turbo and not) to know the capability… you DONT have a 420a powered car do you? have you? if you answer no to both, then DONT even act like you know… im not going to start telling you shit about your engine… btw the head is designed by lotus and im not getting anything confused… and im talking BHP BRAKE HORSE POWER, not flywheel. * * * :cjerk: ---
**Author:** ![eclipsed](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@eclipsed](https://forums.speedlife.net/u/eclipsed)\ **Post date:** [November 29, 2005, 2:17pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/12 "2005-11-29T14:17:00Z")
the head is NOT designed by lotus the pistons ARE designed by mahle, which makes lotus pistons HOWEVER, just because mahle designed pistons for a fucking neon and a lotus does not mean they are the same quality. i mean, for christs sake, toyota made the supra and the paseo… doesnt mean they are of equal quality. chevy made the prism and the z06, definitely not comparable. even if lotus designed the 420a head, it doesnt matter. it is still difficult as hell to squeeze any substantial hp out of that motor without some heavy duty work. ---
**Author:** ![Bacon](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bacon/32/7230_2.png) [@Bacon](https://forums.speedlife.net/u/Bacon)\ **Post date:** [November 29, 2005, 2:43pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/13 "2005-11-29T14:43:20Z")
> [@Daddie](#): > > LOL this fucktard : > > Him: > 420a is hardly a POS, theres a 420a powered neon thats over 1000hp and doesn’t have any block problems… of course this is considering its been completely built up from pistons to bearings but the core is extremely strong and the head is designed by lotus… > > Me: > > Wait. > > Are you saying the 420a head is designed by lotus? > > If you are you’re getting that confused with the spirit RT motor > > Him: > dude its my car… ive researched enough, ive fucked with it enough and i know enough people with eclipses (stock turbo and not) to know the capability… you DONT have a 420a powered car do you? have you? if you answer no to both, then DONT even act like you know… im not going to start telling you shit about your engine… > > btw the head is designed by lotus and im not getting anything confused… > and im talking BHP BRAKE HORSE POWER, not flywheel. > > * * * > > :cjerk: Hahahahahaha! Wow ---
**Author:** ![Rx3](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rx3/32/7194_2.png) [@Rx3](https://forums.speedlife.net/u/Rx3)\ **Post date:** [November 29, 2005, 2:58pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/14 "2005-11-29T14:58:23Z")
Why do you even bother Howie? ---
**Author:** ![jrex](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jrex/32/7232_2.png) [@jrex](https://forums.speedlife.net/u/jrex)\ **Post date:** [November 29, 2005, 3:29pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/15 "2005-11-29T15:29:27Z")
All the 420as we see that were turbo are blown up. Don refuses to even put turbos on those cars because they are such a reliability. ---
**Author:** ![RacerX](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@RacerX](https://forums.speedlife.net/u/RacerX)\ **Post date:** [November 29, 2005, 5:13pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/16 "2005-11-29T17:13:28Z")
I think you could build a respectable 420a with pistons, ARP hardware on head and rods probably mains too, and an upgraded head gasket. Once all that’s done you have a well designed DOHC 2.0. Fuel system upgrades and boost away. The returnless fuel system is problematic, but not all cars had this. ---
**Author:** ![Carbonfiberhooded](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carbonfiberhooded/32/7608_2.png) [@Carbonfiberhooded](https://forums.speedlife.net/u/Carbonfiberhooded)\ **Post date:** [November 29, 2005, 5:34pm UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/17 "2005-11-29T17:34:52Z")
Hey I successfully turbo’d my 420a!!! Sure it was only boosted for two months before the accident, but it was a success story nonetheless!!! ---
**Author:** ![intense98rt](https://avatars.discourse-cdn.com/v4/letter/i/77aa72/32.png) [@intense98rt](https://forums.speedlife.net/u/intense98rt)\ **Post date:** [November 30, 2005, 6:40am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/18 "2005-11-30T06:40:31Z")
420a 1000hp neon? that kid should really stop talking now… if he really knew neons he would know that the engine code is d4re not 420a and if he wanted to make good power numbers he should swap in the 2.4l from a stratus/caravan or pt/srt i dont know about the head tho… i always thought it was a chrysler design ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [November 30, 2005, 9:37am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/19 "2005-11-30T09:37:34Z")
yeah im with intense…as i have been reading through this thread i got more and more confused because ive helped joe and miniSRT4 out plenty of times to know the 420a does not exist in the neon world, the 420a is in DSM’s and made its way into the dodge avenger as well. on top of that is the 420a even DOHC? i swear i thought it was SOHC when i looked at an avenger ---
**Author:** ![RacerX](https://avatars.discourse-cdn.com/v4/letter/r/5e9695/32.png) [@RacerX](https://forums.speedlife.net/u/RacerX)\ **Post date:** [November 30, 2005, 9:51am UTC](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092/20 "2005-11-30T09:51:12Z")
'95-'99 DOHC 2.0 Neon is a 420a engine. [Next page](https://forums.speedlife.net/t/neon-and-nt-dsm-bois-and-girls-school-me-on-the-420a/5092.md?page=2)