M30, M20, m10 Turbo&NA HEADS Limited TIME Product,

[ForcedFirebird]

Who does your flow testing if you don't? You say the budget is tight so it sounds like you're paying someone. If you're in so cal I can dyno your car for cheap but I want to see flow numbers.

Look! He will dyno your car on the cheap.

Its a retired family member who is a legendary racer who retired because his friends kept dying in boat racing he wouldnt like me talking about his life, so until i helped him refind his passions after 15 years of discontinuing his love because of his friends dying, i had to bring him happiness to have the car bug rebite him, but little does anyone know he's the smartest man i've met in my life, and ive met every BMW mechanic, I need to know in orange county.
if you questions be sure to P<M me, i will disclose information if need be but not over the thread. his perimeters
Hes and engineer/machinist/welder/more
enough said, if someone my products don't do what i say, then someone else will have to prove otherwise, because as soon as budget starts coming in more, things will take off if i decide to stick with this for now,

It's kind of hard to sell an unknown product.

[blue plates]

Look! He will dyno your car on the cheap.



It's kind of hard to sell an unknown product.

I read what he posted and got turned off by the idea of him working on my heads. If he can't back his work with numbers from the start we have problems. Dyno'ing a car won't tell me what I need to know because if he's doing head work he'll have a bunch of other mods to start the baseline off. He'd need to pull the head and flow bench it for the real numbers. E30 heads have to have material added to get optimal flow too.

[ForcedFirebird]

E30 heads have to have material added to get optimal flow too.

This isn't true. While yes, they already flow too much for a stock engine, they can certainly flow more with proper porting. Yes, I have a flow bench and have done research ;)

http://www.r3vlimited.com/board/showthread.php?t=261381

[blue plates]

I read that thread a while back and found some good info, great write up!

[pantelones]

This isn't true. While yes, they already flow too much for a stock engine, they can certainly flow more with proper porting. Yes, I have a flow bench and have done research ;)

It's not that they flow too much, it's the terrible angle of the port into the combustion chamber. Material needs to go from the bottom onto the top. I think that's why the guy at RHD prefer the 731 as a base.

Also a good point by digger...

the 200 head is ideal for a small cc M20, the port entry is steeper and with oversize valves the short side can be hugely improved. I think for a high hp M20 stroker the 200 is just a little too small and will choke and you would have to eat into the steeper entry to avoid this and why the 731 in this case would be an easier starting point.

Anyways... OP you should be more concerned about the objective data rather than the pretty pictures and a sales pitch. Since you seem to only be able to provide flow bench results, it would be a good idea to research other peoples work/results and compare them to yours. If you are in the ball park, then your heads will sell no problem :up:

[ForcedFirebird]

It's not that they flow too much, it's the terrible angle of the port into the combustion chamber. Material needs to go from the bottom onto the top. I think that's why the guy at RHD prefer the 731 as a base.

Also a good point by digger...



Anyways... OP you should be more concerned about the objective data rather than the pretty pictures and a sales pitch. Since you seem to only be able to provide flow bench results, it would be a good idea to research other peoples work/results and compare them to yours. If you are in the ball park, then your heads will sell no problem :up:

I don't think OP has flow numbers.

The 885 head flows more than enough for a stock m20 is what I was getting at. If you read my link, you will see we have already put time/effort into flow testing the m20 heads. With light porting in the correct areas, we see in the 180's CFM which is plenty - the manifold is what hangs it up. This is why "the RHD guy" gained so much with ITB's.

The stock system complete with manifold and TB attached barely flows 160CFM, a ~10CFM loss over a bare head (169-173CFM).

Every "backyard" ported head we tested flowed worse than stock, and decreased velocity due to more volume in the port.

[e30m20TurbO7]

As I said when budget increases I will supply numbers From a flow bench when I have time. This isn't my full time job, it is an experiment to see if people need a service provided. I Never said to anyone that my work is better than someone else's. I simply said I am conducting a service to provide something new, because it's not available on the market that I know of.
I have access to 2 flow benches where I live. I will supply flow numbers as soon as I feel like I need to. But really I could care less of peoples opinions and don't need to have someone to tell me what I NEED to do.
I'm conducting a service. Anyone can try and prove otherwise to the statements I've provided for my business.
Thank you all for your awesome info, everyone provided for me. if the negative out weighs the positive. I will close this service. Thank you all.
Everyone had valid points. !!!! Good job everyone
I have a research file the size of a bible in my cabinet of only m20 motors.

I don't think OP has flow numbers.

The 885 head flows more than enough for a stock m20 is what I was getting at. If you read my link, you will see we have already put time/effort into flow testing the m20 heads. With light porting in the correct areas, we see in the 180's CFM which is plenty - the manifold is what hangs it up. This is why "the RHD guy" gained so much with ITB's.

The stock system complete with manifold and TB attached barely flows 160CFM, a ~10CFM loss over a bare head (169-173CFM).

Every "backyard" ported head we tested flowed worse than stock, and decreased velocity due to more volume in the port.

[aventari]

I have access to 2 flow benches where I live. I will supply flow numbers as soon as I feel like I need to. But really I could care less of peoples opinions and don't need to have someone to tell me what I NEED to do.
I'm conducting a service. Anyone can try and prove otherwise to the statements I've provided for my business.
Thank you all for your awesome info, everyone provided for me. if the negative out weighs the positive. I will close this service. Thank you all.

No! Please don't take your ball and go home! We really want to throw money at you



*couldn't care less

[ForcedFirebird]

I simply said I am conducting a service to provide something new, because it's not available on the market that I know of

Rebuilding heads and porting on a 30yr old platform is "new, not available on the market"?

We aren't trying to burst your bubble, but when someone claims they are doing a service/upgrade with no results, besides their own untested car/engine, the general enthusiast will be skeptical.

[blue plates]

^this.

[e30m20TurbO7]

I'm completely agree with this statement, I just won't lie about the testing that I've done, until I've done it. Budget has been low for this business for now, and family health problems is a concern

Rebuilding heads and porting on a 30yr old platform is "new, not available on the market"?

We aren't trying to burst your bubble, but when someone claims they are doing a service/upgrade with no results, besides their own untested car/engine, the general enthusiast will be skeptical.

[GunMetalGrey]

As I said when budget increases I will supply numbers From a flow bench when I have time. This isn't my full time job, it is an experiment to see if people need a service provided. I Never said to anyone that my work is better than someone else's. I simply said I am conducting a service to provide something new, because it's not available on the market that I know of.
I have access to 2 flow benches where I live. I will supply flow numbers as soon as I feel like I need to. But really I could care less of peoples opinions and don't need to have someone to tell me what I NEED to do.
I'm conducting a service. Anyone can try and prove otherwise to the statements I've provided for my business.
Thank you all for your awesome info, everyone provided for me. if the negative out weighs the positive. I will close this service. Thank you all.
Everyone had valid points. !!!! Good job everyone
I have a research file the size of a bible in my cabinet of only m20 motors.

I understand your point, but at the same time people do not want to pay for work that may not actually provide them with any benefit.
If you can provide flow numbers you are able to sell something that is "tangible" vs selling your rasping skills and vast family background.
It would be great if you can provide numbers and provide a good service but people will not pay without proven results.

I hope you can sort this out because it sounds like you have the ability to offer up some cool services!

[e30m20TurbO7]

I have nothing to say to that. Thanks for your input.
It's for longevity purposes. For turbocharged applications

I understand your point, but at the same time people do not want to pay for work that may not actually provide them with any benefit.
If you can provide flow numbers you are able to sell something that is "tangible" vs selling your rasping skills and vast family background.
It would be great if you can provide numbers and provide a good service but people will not pay without proven results.

I hope you can sort this out because it sounds like you have the ability to offer up some cool services!

[blue plates]

lol

[e30m20TurbO7]

[QUOTE=e30m20TurbO7;4200757 bump