PDA

View Full Version : Help and suggestions for my car please read i need help


josh_zarbock
07-05-2009, 07:41 PM
ok well i have been lately running M5 in my eclipse. running straight seems to bog down at low speeds and take off. running 2 gallons M5 and 1 gallon 87 seems to be a perfect mix. no low end bog with exceptional gains on top end. it feels like it helps get me thorugh the rpm range quicker and by watching the rpms climb i do notice a difference. running regular 87 octane i could only reach 84 mph from turn around to turn around on halletsville highway. Now im hitting 92mph in the same distance. Now my question is wat are the long term effects of running this mix?

also i would like to know if anyone can help me with this situation too.

i want to shave my head on my 420a to raise the compression. now if i do this is it goin to affect my cam timing. i know its goin to put the valves extremely close to the piston, but thats a chance im willing to take. can anyone look with me to see how much i can shave off? any help with this would be greatly appreciated.

also i want to slightly degree my stock cams to change the lobes. no clue how to do it but i would like to figure this out or is it best just to get a high performance set

one last thing: pros and cons to a non modular clutch upgrade

like i said any help would be greatly appreciated and im willing to listen to any input on how i should build this car......except doing a motor swap. im sticking with the forgotten motor (420a)

95civicgsr
07-05-2009, 08:00 PM
http://www.honda-tech.com/showthread.php?t=2595667

http://www.dsmtuners.com/forums/420a-bo ... e-car.html (http://www.dsmtuners.com/forums/420a-bolt-tech/256740-my-420a-race-car.html)

josh_zarbock
07-05-2009, 08:13 PM
thats all cool J but i dont wanna turbo it just yet.....wanna build the motor for now. Head cam exhaust and new final drive ratio. so i wanna raise compression first

95civicgsr
07-05-2009, 08:21 PM
i never understood the way people like to do double the work for the same end. why take it aprt twice? if you are going to pull the head do it once. i have never been a big fan om milling the heads to bump compression. there are other and better ways to do that.

josh_zarbock
07-05-2009, 08:23 PM
ok well honestly i dont wanna turbo my car. And i trust you J so how would i go about raising compression...its at 9.6:1 now

95civicgsr
07-05-2009, 09:14 PM
without changing the pistons all you can do is slightly bumo it up which wont gain much performance in a stock na car. your car is heavy and im not really sure how much na power you could squeeze out of an na 420 to even make it quick. if the head isnt milled correctly you can run into issue with mechanical timing on the car. you can run thinner head gaskets or even flat faced valves to slightly bump the compression a few points but thats about it. on our cars a 2 layer hg will yield .2-3 compression and f/f valves around.3. not much unless youre high comp or boosted

vic
07-05-2009, 09:19 PM
This is the similar to a dodge stratus motor correct?

oldcutlass86
07-05-2009, 09:42 PM
If I'm not mistaken yes. Also the same motor as the R/T Neon. I've seen them make lots of power n/a but it costs a LOT of money to make it.

josh_zarbock
07-05-2009, 09:47 PM
well all great things take time....im in no hurry. just need to make a gameplan that way i can work towards it

95civicgsr
07-05-2009, 09:48 PM
well all great things take time....im in no hurry. just need to make a gameplan that way i can work towards it
well in that case then save up get pistons,rods and head work. dont mill the head unless it needs it to be level

vic
07-05-2009, 10:14 PM
well here is a small run down since I used to mod that motor many moons ago lol

eagle makes a 4340 h beam rod set for it 329.00
toga high volume oil pump 150.00
wiseco piston set.. I dont know the bore I think 87.5 +/- 5cc from $680.00-700

Cam sprockets can be had from any of these manufacturers:
AEM
Unorthodox Racing
Fidanza Flywheels
Crane
Speed Lab Racing

Also if you want a larger tb I think the stock automatic neon tb is bigger and I hear CLAIMS of 12hp...

crane cams PN#180-0010 make good power.. crower also makes a set...PN#64450N

If your going to run a power adder go with these Crane's: PN#180-0012 or Crower's: PN#64451.

You can get valvetrain from each of the companies to withstand the camshafts

11:1 is an ideal all motor ratio for those engines.. and that will work well with the cams..

If you want to go a bit higher then yes milling your head .50 is necessary using a 10.8:1 piston to achieve roughly 12:1 to be a bit cheaper Kb's hypereutectic pistons are also an alternative...

Indy makes an intake manifold, or you can have it ported..

I forgot who does good port work on them... I am sure someone can do it with experience.. I used to be really into these engines.. BUT this can be old info.. been like 6 yrs hahahahaha


basically to make 200hp all motor it has to be fully built, balanced blueprinted, ported heads, 12:1 compression, upgraded ignition, fuel system, cam sprockets, header, and other odds and ends.. it will get up close to 7000 easy.

You can get a z28 camaro with stock 348hp for that lol

josh_zarbock
07-05-2009, 10:57 PM
well once the motor is done then the body work begins......its gonna take time. plus here in 3 months i got a trip to TN to see a friend so that will take up a grand of my money

josh_zarbock
07-05-2009, 11:17 PM
now how about some advice on this gas im mixing.

vic
07-05-2009, 11:20 PM
Why are you mixing gas in the first place? and why mix with 89?

josh_zarbock
07-05-2009, 11:26 PM
well its methanol and i cant run that straight in my car otherwise it bogs a low end. so i mix at with gallon of 87 to bring down the octane some

vic
07-05-2009, 11:30 PM
my question is WHY??? is your car running alot of timing? lots of boost? high compression? If its a stock neon motor wth? lol Leave it alone and wait until you can start modding it. Drive it and save money.. Quit beating on it and giving it hell because its going to cost more if it breaks..

be patient. in due time it will come. If i were to make a honest suggestion, it would be to find a better platform.. If you are really stuck on this engine then good luck with it. I have been there and done that.. its not worth it

josh_zarbock
07-05-2009, 11:38 PM
well i wont run this mix all the time then.....just for fun on weekends. i drove it like this for a good hour with no problems so i think it will be ok. so far i have upgraded the fuel system to handle a turbo kit. Went with the Walbro 255 in tank fuel pump. so maybe the route o go is to just build the motor and do a turbo setup. would be cheaper. elgin did it with a 420a and ran into a lean condition but has a fully built motor now so we will see. might follow in his footsteps.

98Aggie
07-05-2009, 11:56 PM
Remember most fuel system are not designed for ethanol. It will corrode the fuel lines and deteriorate the rubber in the fuel tank and injectors.

josh_zarbock
07-06-2009, 12:06 AM
which is why i only put 2 gallons at a time cuz i can run that out quick. ya kurt i remembered that. thanx for putting it out there though. well i was having an issue with it when i pushed the clutch in it wnted tyo idle at 2 grand but when i cam to a complete stop it would idle down. ran straight M5 through it and it no longer does that. so im happy that is temporarily fixed.

josh_zarbock
07-06-2009, 09:02 PM
ok well i put regular 87 in my car today and now im back to my startup problem. why is that my car runs so shitty on 87 and requires a higher octane to run. i know the ECM in the car has had somethin done to it i just dont know wat. could that be a problem cuz it only started this once i put this ecm in.