hi all cam questions?

[treeseries]

whats the biggest and best cams to put in the m42 without worrying about anything else? if i were to go bigger what other mods do i need to do first.im currently on cat cams site and it says alot of mumbojumbo that i dont understand. i.e adjustable engine management. could i just stick in huge cams and megasquirt it myself?

[kowalski]

whats the biggest and best cams to put in the m42 without worrying about anything else? if i were to go bigger what other mods do i need to do first.im currently on cat cams site and it says alot of mumbojumbo that i dont understand. i.e adjustable engine management. could i just stick in huge cams and megasquirt it myself?

you could but by the sounds of it you don't really know what your doing, and thus MS would be like traveling through hell for you. it all depends on your budget.

[Abrax]

"travelling through hell" - nicely described Mike ;-)

[treeseries]

i dont have a limit to my budget but i just want to increase the power in a sensible fashion without making drastic changes to the internals.

[kowalski]

"travelling through hell" - nicely described Mike ;-)

hahaha thanks, i do what i can.

[kowalski]

i dont have a limit to my budget but i just want to increase the power in a sensible fashion without making drastic changes to the internals.

this makes no sense.

the only way to sensibly increase the power of your motor (without going F/I) would be to change the internals, its the only way your going to see some decent power.

if you WERE to go FI, and have it as a DD, then i would still recommend that you start with a fresh motor, and if your going to start with a fresh motor, spend the extra 700$ or so and get some new pistons.

My current motor has had the head reworked as much as a stock head can, along with some nice cams, and some other stuff to make it all work properly and its still not THAT fast. Now that i'm doing it all over again, i've got a full stand alone system, an m47 crank, and i'm going to be ordering JE pistons, over sized valves, light weight valve train, etc... the list goes on. In the end i plan to have a n/a 230+hp daily driven screamer.  which i will probably get bored of, pull the pan off and pop in new pistons, and throw a turbo on it... but we'll save that for a few years.

[Boyracer]

i dont have a limit to my budget but i just want to increase the power in a sensible fashion without making drastic changes to the internals.

Then 165 - 170 hp is about the max you are going to get with chip and mild cams...

More agressive cams require stiffer springs and perhaps solid lifters too. And to get "big" power out of 1.8 liter engine you just have to rev it like you stole it. That means pistons, con rods and perhaps crankshaft require work so they can take the abuse.

[Abrax]

i dont have a limit to my budget but i just want to increase the power in a sensible fashion without making drastic changes to the internals.

The most sensible fashion I know is the Metric Mechanic unit... Especially if You are not real tuner itself. It is the most complex and proven way of increasing power to M42.

W/O drastic changes to the internals -> You can put there chip allowing higher revs /7000rpm/ -> and this causes +13 up to +17Hp's /depending on the gasoline type it is designed for/ Put there cone filter +5Hp's and lighten Your flywheel. This is the most sensible way of getting some Hp's to the engine. Changing the exhaust will change the sound, will maybe give it a little more flow at the end, but You will lose in the midrange.

So w/o rebuilding the unit, You can achieve more agressive /due to light flywheel/ and stronger /about 20-25Hp's/ unit. Changing the cams won't do any magic-> and surely without changing compression ratio, head flow, and lightening inside parts it is simply not calculating.

You can change the transmission to short one /for example 5spd getrag 225/ with 5th 1:1 but this will cause lower maximum speed, and You can surely change Your differential -for example to 4.45 unit. This will again shorten Your max speed but will transmit more wheel torque at lower speeds. But that's all.

For serious powergains go MM engine, for easier but less driveable -> go supercharged and for the most efficient improvement go TURBO! And Take the advantage of having 400+Hp's under the hood

Of corse every one of theese engines appear differently, the most streetable option is N/A engine than a supercharged , but due to the LAG turbocharging the engine is not always liked by drivers. But it surely gives the most powerful unit.

My aid -> unless You strongly feel the engines by Yourself - keep it simple ;-)