I was planning on porting mine this spring, is it really that tricky? How far down do you siamese the runners?

And whats the part # for the siamesed gaskets?

 

I hope porting the intake works for ya man..I hope that your not to lean on one side compared to the other.. but it should work alot better than stock... are you still getting your head work done?

 

hay man no problem

Hawk92z-TDZ there is no siamesed gaskets that i know of. the gasket that ric and i used are Mr gasket #146. they are killer big compaird to stock ones but will still need to be cut to make them siamesed.

porting them is not to hard if you have the right tools. do you have a set of SLPS now or are you still looking for a set.

 

Well according to my LAW OF UPGRADES (anything that can foul up will foul up -- and cost you twice as much as you planned on to get it working right) the car will probably lose 2 or 3/10s in the 1/4 and backfire under load.

WHo says the factory system isn't leaning out one side already ???

Anyway, I have the old style SLP runners where one pair of each side is completely siamesed and the other side partially siamesed. Not sure about the lean thing anymore, have been reading about pressurized wave pulses and other rocketry. Mostly way over my head but I'm starting to get the gist of it...

No head work this year still too much back pain. I can't even get in for a CT scan till May can you believe it ? I have to go to a clinic in Niagara, USA instead. Hey come to think of it I may want to pick up some parts while I am there...


adious,
RP.

 

Sounds like you guys did a nice job on the runners. That 305 should be much happier breathing through those big tubes.

Without doing the heads the bigger runners should not affect your low end torque adversely and you should see an increase in horsepower above 4000 rpm.

Now that you have faith in Triggers port work why not let him have a go at the heads.

Happy modding
Ric

 

hahaha i was going to see if you wanted to show me how to do my heads in a few months or so.


no realy...can you?

 

Yes not much harder than doin the runners you should have no trouble. All you need is a plan. Like making the same number of square inches fron one end of the runner to the other. Install venturi in exhaust port below vavle seat and match to intake runners and exhaust manifold or headers.

Ric

 

Wanna make some cash ???????


I'll buy a set used and get'em ported ( mannnnn do I need it ) the new cam I am going to run is wacko for the 305 stockers .........

 

No Thanks I have got big plans for a project car and need to spend time doing work on it.

Besides I think I am alergic to cast Iron dust everytime I get grinding my nose plugs up and I keep sneezin for about a week afterwards.

Tips are free though.

Ric

 

K .... when I go to the junk yard how can I tell visually if they are the 58cc 305 heads?
Second Can I do all this porting with a dremil ??
What can I expect these heads to cost ?


thanx alot
Dan

 

Hey Ratchet,

I have a set of 1 1/2 inch headers to install as well. Combined with the runners I expect to see some interesting improvements. We'll see on dyno day eh ?

RP.

 

Still looking for a set of SLP runners, got there 1 3/4" headers comming in at least, should help on the one end

Just wanted to know how to do it when i finaly get a set of the runners, need to port my plenium too, just scared of messing it up. Was gunna get the intake base last. Thanx for the gasket #

 

Palric

If you have the runners off and you are going to take off the exhaust manifolds to install the headers ar'n't the heads just sitting there begging to be removed and opened up to match the rest of your free flowing set up. Just a question??

Hey your not doing the heads on the sly and not lettin on are yah?

D's89IROZ

I am not familiar with how to tell what combustion chamber a head has just from looking at it when it is still bolted on the engine as most junk yard heads are. The only way I know of is to copy down the casting numbers and check on mortec or somewhere to identify the heads. As for dremel grinders I have never used one to do porting. I usually use an air grinder. I have however used an eletric grinder similar to a dremel grinder but with much more power and the ability to take a 1/4" shank bit. Most of the dremel tools I have seen only accept 1/8" bits.

Ric