I understand. It's just that all this turbo stuff is starting to get to me and I'm not particularly in a good mood right now. As you know well, this is not the first, second, or third thing that has gone wrong since I put this single turbo in the car....

Ted- the diaphram wasn't damaged to the point that there was a hole in it or anything. I was just a little deformed in one spot. I believe this was causing the WG to stay partially open and vent all my exhaust gases causing me to have low boost at times. This problem only started occuring a week ago and only when the car warm. By warm I mean only after driving the car around for 20 minutes or more. I only have a few thousand miles on the entire turbo setup.

 

I have an XS Engineering manifold with an HKS standard wastegate and it works GREAT! , im just fucken with ya Josh, hey do you have the manifold heat wrapped? If not maybe it would help, you know how great that stuff works.

 

I'm glad things are working out well for you brian But I heard you couldn't even keep up with a Z06 with that setup

 

first of all Ted hit it on tha spot,if the diaphragm was damaged you would over boost. either you have boost or you dont, Josh your inconsistency is not because of the manifold

Greg i dont appreciate your comment on " a real turbo system" i have been building systems since before you got your liscense!! the reason the WG sits close to the header is to make room for the huge 4" DP!! as far as how many manifold i have made....i have made more than 50 manifolds i make them for supra's ,mustangs, camaros, handas etc etc. if you think you can out fab me with your MIG welder , i am willing to put a wager on it!!
try stuffing two T76's on a LS1 powered firebird!

just because a lot of you are on the forum day in and day out does not mean you are the only rx7 owners on the planet, the majority of my business comes from rx7 owners who know nothing about the list and digest, there are 8 of my kits locally on rx7's. i can have any of them contact any of you about the system if need be. josh has admitted to not knowing alot about the situation and i am helping him in anyway possible. but listen guys ..you are saying that by the manifold "touching" the WG it caused the diaphragm to melt???? think about this.. judging by the pic only a corner of the wg can touch it, the runner is not "bent in" !!! there is no ******* way this damaged the diaphragm. how hot do you think the stainless valve inside of the wastegate gets? it actually touches the diaphragm more so than the heat sink!

i would expect a little more than bashing, from you Greg

 

Ok, marcus, let see here. Did I ever say that the manifold was a piece of ****??? Did I ever say dont buy from Marcus? NO. I simply stated true facts. The fact that you have made manifolds for tons of other cars is nice and all but what does that actually prove in the rotary racing scene. I stated facts before and now about the manifold design and what not. Man, I even recomended that people try you manifold out in this thread. https://www.rx7club.com/forum/showth...light=williams . This is not lets get pissy at Greg day. I am not your competition in the manifold market. I was just offering advice to you in creating a manifold that is better than the one there. Any person can weld some tubes to a T4 flange and add a pipe for a wastegate but only certain people can design a manifold that is superior. There are several things you have to take into account when building a manifold, runner length, airflow direction etc..etc.. Jesus Christ I guess there is no room for creative criticism now a days, people get all pissed off and call other traitors just because opinions differ. I even offered my creative criticism on your intake manifold for your drag car, but you quickly fot pissed and rejected my opinion. Now after some time someone is having intake manifold problems. Ya know, if you dont want someone to ccritique your work then dont make products available to the public. I always admired your car and enthusiasm to the drag racing scene but damn. Chill out a little and be able to take some creative criticism sometimes, it can help in the long run.

 

The fact that you have made manifolds for tons of other cars is nice and all but what does that actually prove in the rotary racing scene?

it proves i know how to make manifolds!

I was just offering advice to you in creating a manifold that is better than the one there. Any person can weld some tubes to a T4 flange and add a pipe for a wastegate but only certain people can design a manifold that is superior. There are several things you have to take into account when building a manifold, runner length, airflow direction etc..etc..

how do you know that i did not do that? you have not actually seen my header in person nad notice the little things that make the difference in turbo response. there are more to the eye than what you see in a pic.

Jesus Christ I guess there is no room for creative criticism now a days, people get all pissed off and call other traitors just because opinions differ. I even offered my creative criticism on your intake manifold for your drag car, but you quickly fot pissed and rejected my opinion. Now after some time someone is having intake manifold problems.

what problems am i having with my manifold? last time i checked (yesterday) it was working fine. anyway , i have access to a flow bench and it has been flowed along with my headers. when did you become the authority on intake maniflods and headers? where is your product? i did not get pissed because you have no idea what i have or have not done ,so for you to tell me what to do on a car that you have not seen is crazy!! it seems that Josh and i think that you may be jumping a little bit should tell you something about your remarks,they are not constructive but just criticism.

I always admired your car and enthusiasm to the drag racing scene but damn. Chill out a little and be able to take some creative criticism sometimes, it can help in the long run.

when you give me creative criticism i can handle it but when you make remarks like my header is not well thought out pisses me off, just because it does not look like Greddy or HKS it is not correct! i dont expect you to understand where i am coming from because you dont have a product on the market or a website to sell your services. you would also be a little sensitive if i were to pop up at your job and tell you that whatever you are doing is not well thought out and could be done better in my opinion.. even though i dont know **** about what you do! think about it man i am not mad at ya, just lettin you know how i feel, repect me and i will respect you back!!!

PEACE
MWW

 

Josh lives 10 minutes from me, I have definately seen the manifold in person.

ok man

Ok, so now I dont know how a manifold is supposed to be designed. I refuse to sit here and argue with you over who is right and who is wrong. I didnt try to hurt anyones feelins but truth is truth.

 

Ok, so now I dont know how a manifold is supposed to be designed.

that is not the point i am trying to make.

I refuse to sit here and argue with you over who is right and who is wrong.

same here.

I didnt try to hurt anyones feelins but truth is truth.



exactly right truth is truth...bygones

BTW are you still putting a car together for the outlaw class? if so when are you debuting it?

MWW

 

Back to the original subject. Have you checked the backpressure in your exhaust? I had a problem once where I had so much backpressure that it was forcing my wastegate open. Even with a 15psi spring and the wastegate pressure line disconnected I could not get more than 8psi. I checked my backpressure and as soon as I started to build boost it would peg out my gauge. I opened up my exhaust and problem solved.

 

he has a free flowing exhaust. Are you Jeff Warner from mazdaracing.com ?

 

I thought that was pretty damn good for 8-10 psi! I wonder what it will be like with 18 psi.

 

I had the opposite problem. The WG came with a .8 bar spring and I was unable to get anything lower than 14 psi. If I restrict the exhaust with my silencers then I will get 13 psi. Other than that, the WG seemed to be working fine for a few thousand miles.

 

Greg,
No, I am not Jeff. Though I think we have discussed our problems with them. My name is Cliff and I am not affiliated with them other than they did my engine rebuild and porting... twice. Second time seems to be much better. I was the guy that they left the tension bolts loose when they did the 1st rebuild and water was leaking out the bolt hole in the rear housing. Maybe you don't remember...

 

sliver7, are you using any kind of boost controller or just running off the spring?

 

yes, I do remember. just checking. I was going to flame you if you were

 

Yeah me too.

 

LMAO... too funny...

 

I used just the spring at first but now I use a ball and spring pressure valve.