Home ported neon sohc head 2.0 with dremel

Timing belt broke and had to pull the head to replace the four bent vavles and decided to port the head alittle. Couldn't reach some of the areas as you can see. Limited by the dremel.We'll see if all this effort is worth anything. Maybe 115 horse? Watch out LOL!!!!

Category:

Autos & Vehicles

Tags:

• ported
• neon
• 2.0
• sohc
• cylinder
• head

[bansheeboi2000]

if you just polish the combustion chamber it wont change your CR bad enough for you to notice unless u dont know what your doing its only to keep carbon from sticking to the metal

[winsorcoupe]

Its a cheap car that i wanted to do something to for the practice and the hell of it while it was apart. Its a non tubro neon so not much was expected. and the CR was increased by the 0.030 taken of the head when it was apart. Maybe when i get serioius with one of my mustang projects I'll spend alittle more time and attention to detail and go all out with it.. appreciate the info. though!

[fcerratu]

didn't this changed the compress ratio? thanks.

[winsorcoupe]

Yes but i'm not sure by how much.

[caniwitech]

@96Rolla briggs and straton are flatheads, and there is nothing to "port" but nice try anyway.

[vochitoken]

so it was worth it?

[505197]

You can grind the crap out of the chambers and not change CR enough to make a bit of difference. Fact is CR is theortical in nature, what fill % does an engine have? If you make it easier to fill by relieving the chamber wall and moving it away from the valve, unshrouding, it gets more air into the hole, so who knows where the dynamic compression ends up. I know the engines make more power, so more air must be gettin in. Polish don't move air, it sells heads. slick chambers soak up less heat

[outbackautomotive]

Well done!

[ylism]

Wonder what the stock heads flow before doing any work to them ? Does anybody happen to know the stock SOHC 2.0 lt flow numbers for both ports. There was a time when MOPAR sold porting templates for there heads. Not sure about the 4 cylinders thou. BTW you did not say if the V-guides & pistons where still good after the bent valves... Hope you get a fair reward for the money & time. Best, yl

[96Rolla]

looks good for a first timer, lol i do this as a sidejob and have been doing it for a while and sometimes its a struggle even with the tools i have, i cant even imagine how long it took you with a dremel! not bad at all though, first head i ported was in high school shop class a 5hp briggs n straton hahaha

[neneunico]

With the head milled 0.030 the CR will be 10.40 on a SOHC. You can mill to 0.050 without timing belt issue.

[winsorcoupe]

The CR was not increased by porting the head, it was the 0.030 taken off the head.I couldn't go any more cause the machine shop said it would give me timing belt issues (being to loose due to a shorter head)