Rotortuner

I built a motor for a friend and he did the primary ports for him and he did his own secondarys, and his looked almost identical to your. As you looked at his, on the 6th port his seemed to go more to the left than your by a little but not quite as high. Really close to the same thing though. We didnt put the sleeves back in his cus we dont care about low end, and he ran a hommade dual 4 barrell carb set up and it ran really pretty good. Had as amazing upper end that was ausome.

CJG

Flyby116

Good to hear .

How did it idle?
And how loud was it? lol

Mark'sMazda

what did the repu do at the strip?

hypntyz7

That is a different port than the way I see many 6 port motors done, adn the way I do mine...

IF you were going to keep functional sleeves present, why didnt you elect to leave the primary port divided from teh secondary ports? That way, when the sleeves are closed, you retain most of your low end power, as the intake timing is near stock, and when the sleeve opens, the port takes over, as I put the large port on the secondary ports only.

IM not questioning yours or Ito's logic or anythign here, just saying that it is a different approach than what most people try to accomplish with a 6 port motor. I have found that taking that divider out loses a LOT more low end than leaving it in, and it doesnt really change the top end, which is affected by the secondary port length. IF your gain was ultimate top end while sacrificing low end, why didnt you go with 4 port irons, then port-match the intake manifold?

RETed

I'd like to see the dyno runs on this ported engine myself...

There are several things that I find "odd" about this port job...

1) Combining the 6-ports with the "primary" port - this kills low end power, but the dyno sheet should show the real deal.

2) Why was the water jacket filled?&nbsp Are you running some kinda weird PP?

3) Why was the port sanded with a ton of sanding scratches around the port?&nbsp Did they let the bit jump out and nick the housing surface, and they were trying to cover up their screw-up?&nbsp The minute scratches are not typical for most port jobs.

This might make the 200RWHP mark, but I think the low end might suffer.&nbsp Race motor?&nbsp Street car?


-Ted

Judge Ito

Water jacket filled? where do you see that? water jacket is not filled. No epoxy any where in this engine.On a six port engine there is so much metal around the ports that there is no need to go way over into the water jacket. Will not loose low end torque I will reuse and have the auxilary ports in and working properly. The primary intake runner(which is not shown in picture) is the one responsible for most of the low rpm torque, Port on that centre side housing is not very large for that reason, dont want to sacrifice low rpm torque to much. Now the secondary ports are so small that not much is accomplished by leaving the metal between the ports in there. when I did this type of port I would install the sleeve every so often and ported the best flow with out hurting the relationship between the regular 3 and 4th ports and the 5 &6 ports. I have ported a couple of 6 ports this way and low rpm is great and a nice top end power was achieved. This engine I spend more time trying to get the most out of my 3 and 4th ports. The SANDING you talk about is to clear away the shard edges on the side housing. no damage was done to the side housings and a final sanding left it even smoother. Take a note if you dont make sure this edges are not smooth a side seal will pay the price.

Judge Ito

You know what I have found to really hurt a 6 port engines low rpm torque? is removing totally the 5 and 6 port sleeves.I will run the sleeves with the pineapple inserts(better flow) I left the sleeves in there while I was porting away the 3rd and 4th ports. This stock ports are so tiny that porting any other way is a waste of time. I'm looking for a better flowing port a way to make a difference with this 6 port engines. **** the first thing that Jim Mederer will tell you is don't waste your time with this 6 port engines. I have taken a 1987 Rx7 to the dyno a port similar to this. @4,200rpm made 128rwhp when the 5 and 6 port opened power went up to 158rwhp. This Rx7 had some really crappy headors stock cat and stock mufflers. everything was stock except the engine. Low rpm power was great and mid and higher power was even better. This is a 1991 Rx7 9.7 to 1 compression engine and some really good toys are going to be installed to help this engine make it's desired hp goal 200rwhp.

FCRyosuke07

iTrader: (1)

makes me glad i live in NJ..you come highly reccomended, as soon as i pick up my TII and some money, ill stop by

vosko

iTrader: (4)

i remember rice racing said the porting on my engine was garbage...... gee my car only made 416rwhp @ 13psi.... the judge knows what he is doing

zyounker

In all fairness i believe that is becuase he saw a mark on the housing and thought it was ported past where the oil control rings go by...


-Zach

vosko

iTrader: (4)

yeah but he also told me that all my brand new housings were garbage and to make judge ito buy me brand new ones. it is said and done but i am saying people should think a little first before they go saying that is garbage or its completely wrong. i swear this forum loves to try and give people heartattack's about their cars over nothing. i and everyone else should be 100% sure by now that judge ito knows what he is doing

zyounker

I do agree that alot of people on here like to talk ****, i just wanted to clairify that rice just made a mistake..


And i am sure Judge Ito knows his ****..

hypntyz7

Not sure who, if anyone in this thread, you were referring to, but like I said I wasnt saying it was wrong, wasnt saying it wouldnt work, wasnt saying it wouldnt make good power, just said it was different from what you normally see, and that it didnt quite make sense to me. Im pretty sure most of us know that Ito does good work and knows his stuff as well as almost anybody else, Ijust made some comments about something I hadnt seen done before.

I still think if you went to that trouble, you shoulda just went 4 port.

vosko

iTrader: (4)

i know he was wrong. hell i've second guessed the judge and everytime he proves me wrong. like when i got worried about the oil control ring he showed me on my engine where everything goes and how it was fine. so far on my FD and my two FC's that i had he has not steered me wrong. in 5mins he made my GTU run better than it ever did before, he also helped me make my TII run consistent 13's before the tired old low compression engine gave out LOL. anyway i think flyby will hit 200rwhp

vosko

iTrader: (4)

criticism is good. cynicism is bad. way too much cynicism around

we'll let the #'s speak for themselves once the car runs

Judge Ito

I don't think he was reffering to you. Maybe Ted but not you. When you say it doesn't fit the normal 6 port way or porting an engine. I would answer and say I DONT PORT IN A NORMAL WAY. I have spent so many years porting is unreal. I have tried all kinds of intake opening and intake closing ports. Exhaust opening and closing ports. I have found good and bad ways of porting. I would even go as far as saying that my ports make pore power then your average other guy. No need to fight, But Vosko has a point. alot of cynicism around. And let's not forget a little respect towards my ports. They have produced some serious numbers. that's for you TED. Most of the engine builders don't even like to show any ports. But if Rick Engman rotary engine guru wrote a book and showcased his ports, then who am I? Im just a humble rotorhead that has ported quit a few engines that have produced more then 700rwhp on a 2 rotor engine and looking to make well over 1000rwhp in my latest ported 3 rotor 20B engine..

vosko

iTrader: (4)

judge ito asked me to post these pix which i haven't seen yet. all i have to say is WOW

FCRyosuke07

iTrader: (1)

damn.

sunshine

iTrader: (3)

holy cow - thats real nice!

vosko

iTrader: (4)

i know what i want for christmas now

Samps

where is ito at in N.J.?

vosko

iTrader: (4)

paterson, North NJ. probably 2hours away from you i guess ??

86OrangeRx-7

Ito is in paterson.. if you look at flyby's page where you see his engine port.. on the bottom is the exact address.. its actually the sign on the outside of his place. I nearly dropped when I saw all the Rx-7's he had in the lot first time I dropped my Seven by..

Samps

I can do 2 hours! Shoot; KDR was 6.

86OrangeRx-7

I'm like 15 mins away from ito.. I get the urge to see my baby ever so often.. and since its so close Its hard to resist.