Mazda 626 Intake Manifold = ********** Intake Manifold

[flat_black]

Extrude honing is extremely expensive, in my experience. Uugh.

 

[03.5MSP]

Extrude Hone quoted me a price of $485 for the intake mani port and polish.

 

[igdrasil]

Actually the 626 mani will not flow as good as stock....

no benefits at all.

Even the ford probe manifold looks similar, same concept, bolts on the protege head and TB.

They are just long runners.

 

[Captain KRM P5]

Actually the 626 mani will not flow as good as stock....

no benefits at all.

Even the ford probe manifold looks similar, same concept, bolts on the protege head and TB.

They are just long runners.

i have heard there are gains up top over stock, losses down low

 

[KzA]

if it is properly done (extrude hone, etc) by a machine shop, it can be very expensive

I understand that..but I just cant see Street Unit going to that extreme and not advertising it...thats moreso where I was going with that statement

all in all..i think its well overdue time for a freakin intake mani

 

[StreetUnit]

Fellas,
Since you guys brought these similarities to my attention a few weeks ago, I personally have done a some research between the manifolds. The manifolds are not the same, similiar, but definately not the same. This is what I found out...

The SU IM has no VICS/VTCS systems or mounting holes for the flappers. All of the runner ports and the TB are smooth, there is no flange ridges like this 626 manifold pictured. These are two major differences that hinder airflow. The SU manifold is bolt-on and shows performance gains.

We actually had some people on this forum say that removing VICS/VTCS would lose top end power and some said there would be bottom end power loss. Well both were wrong, the dyno results showed positive gains throughout the entire powerband.

This is not a new topic, it goes back a few years. People have tried the 626 manifold and failed.

Bottom line here is that we have a similiar manifold, but not the same, and most importantly it fits and shows performance gains with out any problems. Thanks guys.

 

[Aricjm15]

Actually the 626 mani will not flow as good as stock....

no benefits at all.

Even the ford probe manifold looks similar, same concept, bolts on the protege head and TB.

They are just long runners.

I was thinking the same thing, a ported stock manifold would flow much better.
a dual length manifold has many advantages, mostly that it is tuned for both high and low end power, where as a manifold with long runners is only good for low end power.

 

[Mike R]

It's a shame no one has dyno'd a VTCS removal on a stock intake...

 

[Paul]

It's a shame no one has dyno'd a VTCS removal on a stock intake...

i did a before and after dyno w/ the vtcs held open by a zip tie.
diff was 14hp w/ them held open. much better how the were stock.

 

[azian6er]

Fellas,
Since you guys brought these similarities to my attention a few weeks ago, I personally have done a some research between the manifolds. The manifolds are not the same, similiar, but definately not the same. This is what I found out...

The SU IM has no VICS/VTCS systems or mounting holes for the flappers. All of the runner ports and the TB are smooth, there is no flange ridges like this 626 manifold pictured. These are two major differences that hinder airflow. The SU manifold is bolt-on and shows performance gains.

We actually had some people on this forum say that removing VICS/VTCS would lose top end power and some said there would be bottom end power loss. Well both were wrong, the dyno results showed positive gains throughout the entire powerband.

This is not a new topic, it goes back a few years. People have tried the 626 manifold and failed.

Bottom line here is that we have a similiar manifold, but not the same, and most importantly it fits and shows performance gains with out any problems. Thanks guys.

there is no vcts or vics on the manifold pictured, or even mounting holes. Also, the ports seem exactly the same to me.

Finally, what flange ridge are you talking about and how does that affect the performance of the manifold?

You are right about some people trying 626 manifolds and failing. However, they werent this manifold

-Bryan

 

[Puckpimp71]

My hair hurts.

 

[jonlong]

Right, depending on the year of the 626 mani, some had VTCS and VICS, others did not. The 2000 626 mani does not have any signs of VTCS or VICS, holes, butterflies, flappers, etc... Also, I know that the stock protege mani has lips inside the runners which can be ported (I've done it). The 626 mani does not have those. **********, again, I am open-minded and willing to listen to what differences there are between the manifolds. But the differences you listed don't apply to a 2000 model-year 626 manifold.

 

[StreetUnit]

there is no vcts or vics on the manifold pictured, or even mounting holes. Also, the ports seem exactly the same to me.

Finally, what flange ridge are you talking about and how does that affect the performance of the manifold?

You are right about some people trying 626 manifolds and failing. However, they werent this manifold

-Bryan

Anything I say, you will protest it. You have always got something to say against me and the members here know it. When we spoke on the phone a few weeks ago, you proved to me that you are the whiney type, and your true goal was to start a flaming originally, and now it is again. Now if this is not true, please tell me what ever happened to the 626 manifold you order from some junk yard a few weeks back? You said you were going to put it on and dyno it... You talk alot yet haven't back it up...

 

[azian6er]

Anything I say, you will protest it. You have always got something to say against me and the members here know it. When we spoke on the phone a few weeks ago, you proved to me that you are the whiney type, and your true goal was to start a flaming originally, and now it is again. Now if this is not true, please tell me what ever happened to the 626 manifold you order from some junk yard a few weeks back? You said you were going to put it on and dyno it... You talk alot yet haven't back it up...

and i am not trying to protest cullen. I am just wondering about what you posted. There is no malintent whatsoever. I though we had settled our differences, no?

I was just asking about the ridge you pointed out and the fact that there was no vics/vcts???

I mean no harm, really.

-

 

[StreetUnit]

Right, depending on the year of the 626 mani, some had VTCS and VICS, others did not. The 2000 626 mani does not have any signs of VTCS or VICS, holes, butterflies, flappers, etc... Also, I know that the stock protege mani has lips inside the runners which can be ported (I've done it). The 626 mani does not have those. **********, again, I am open-minded and willing to listen to what differences there are between the manifolds. But the differences you listed don't apply to a 2000 model-year 626 manifold.

Then we have different 2000 626 manifolds, I have one right here and it has the holes, butterflies, flappers, etc.

 

[jonlong]

Anything I say, you will protest it. You have always got something to say against me and the members here know it. When we spoke on the phone a few weeks ago, you proved to me that you are the whiney type, and your true goal was to start a flaming originally, and now it is again. Now if this is not true, please tell me what ever happened to the 626 manifold you order from some junk yard a few weeks back? You said you were going to put it on and dyno it... You talk alot yet haven't back it up...

this is how flame wars start.

Please, just explain what the differences are between the 626 manifold and yours. Once you do that, once you tell all of us why that manifold is $500 more, then all of this questioning will stop. Let's not bring up personal issues.

 

[azian6er]

Then we have different 2000 626 manifolds, I have one right here and it has the holes, butterflies, flappers, etc.

that is probably the special emissions type. They have a federal emissions type which is this one.

 

[jonlong]

Then we have different 2000 626 manifolds, I have one right here and it has the holes, butterflies, flappers, etc.

Ok. That's interesting. I'm not sure why yours would have it and mine does not. But what, then, is the difference between the SU IM and my 626 IM? Simple question, a simple answer is all that is necessary.

 

[Mr. 4500 RPM]

you know i hate to step in and this has been debated in the past in previous threads. in the end cullen DOES NOT have to give exact detaisl stating the difference. he can if he wants but as a vendor hes DOES NOT HAVE TO seeing as how anyone could copy the deisgn and w/e hes he does to get the power to where it is. i have to blow this up even more and i understandn what you guys are trying to do...but honestly BEFORE this gets out of hand as it has been stated in the past prove in actions not in words. this thread should have been started POST install/dyno. if there is a difference there is one and this should be proven after you do a write on the steps youve done, what youve done, a pre and post dyno run and w/e other details youd like to include. now go on and say i am a cullen follower but i will not sit down and have yet another vendor leave or be pushed around because of people doubting the work at hand. IF YOU DONT HAVE THE MONEY OR DONT WANT TO SPEND THE 500 ON HIS INTAKE MANIFOLD DO NOT AND CALL IT A DAY. its not that hard of a concept

/end of my rant good night ladies and gents!

 

[StreetUnit]

this is how flame wars start.

Please, just explain what the differences are between the 626 manifold and yours. Once you do that, once you tell all of us why that manifold is $500 more, then all of this questioning will stop. Let's not bring up personal issues.

This is getting very repetitive. Here is the details of the SU manifold.

http://www.**********.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=SUFSIM&Category_Code=MSP_ENG

It can be compare it to whatever junk yard items you guys try. Like I said, bottom line here is that we have a similiar manifold, but not the same, and most importantly it fits and shows performance gains with out any problems.