Alright well I think now that we have all got our issues aired out, let's not continue to take this down an ugly road. If the thread goes off topic again, the thread will be closed.

This is a good advice to go by. Our project car will probably need head work down the road and this is what I will plan to do myself.

 

couldnt have said it better, Cosworth is no joke those guys' skill is amazing, and "IMO" AMS is my 2nd choice

 

Here's another dyno sheet from another car today. This car was tuned on the HTA35r and ONLY 93 octane fuel. I'd say 551 whp shows some "decent" head flow on pump gas and only 31 psi.

 

I have talked with all the builders and all have vaild points. Not everyone can be perfect as we all know "AL" these are small business and somtimes things slip through the cracks but when that happens call the company and if they are a good company they will stand behind what they build and fix it as all companys have had to do we are not all perfect.

 

that is ****ing amazing

 

The problem with calling and asking is that what happened in this thread is just going to happen over the phone again. Instead of proving to the customer exactly why their race head is worth paying for, they will be badmouthing other shops and then telling you how many cars went fast with their race heads. Is that really an objective way of determining which race head to buy? Every shop has got their fast cars afterall. The only useful post in this thread so far came from 9sec9 and I thank him for that. Its so difficult nowadays to expect vendors to just step up and prove to us customers why they are good and not simply why they are better than the competition.

 

Well here's how you solve that. You look at the vendor's past customer cars (and their shop cars) and see how they preform. Do the research yourself (dyno charts, time slips, track #'s, etc.). There is a ton of info here.

When you decide to call them, be upfront with each vendor and ask them questions. If they don't answer your questions and continue to just air out their issues about other vendors then move on. Communication is a big part when working with a vendor and you need to be able to clearly tell the vendor what your goals are.

When I start looking for a place to work on the project car, the first thing I will do is to think about what the end goal is for the car. If I'm going to build a track car (time attack, etc.) then I will look for the vendors who are successful in that category and start from there.

 

Except when one looks through the shiny exterior and gets to the 'meat and potatoes', IMO, it doesn't live up to the pricetag. Even if it flowed no better than a stock head, at least 75% of those who bought it would never know it.


True, except it would be best not to use 'shop cars' as a bonafied representation of real-world results. After all, it's easy to use a shop car as advertising bait and deliver something else not quite so polished to the masses. This harkens to the all-too-familar fine print, "Results not typical", which is why when conducting independent tests, the most objective product samples are those that come from the field and not 'dealer prepped'.

 

Got to love the shape of the power band on that - just keeps climbing to the top - wait kind of like the dyno sheet I made on my Buschur Head and Block Evo today

 

There was a huge issue with false knock, that me and others are having using the stock ecu. I know you heard about this. Maybe it is caused by the way you clearince the piston?dunno... I talked to Carmela today about my oil useage, I think it is alot. The motor was broke in per your instructions. Spending this much $$ I am looking for perfection. Maybe I am in the wrong....

 

Which is why I asked about the Cossi head when looking for one. A friend of mine had one and wanted to sell it to me, then I asked him why he didn't have it in his car, and he told me he didn't like it for "his" car, but should do wonders on mine. I asked him which head he was running... He told me "Buschur". I told him thanks Dumb ***, and made my mind up at that point!

Cossworth, IMO, you just pay for the name, sure they make some good stuff, I'm not knocking them at all, but I don't think a 4 grand head isn't worth it when that's basically a full engine build and there's many other for far less making the same if not more power then theirs.

 

I agree that using a shop car as proof that something works is not the best place to look for results. On that same note though there are a LOT of cars out there that have been built that never make it to the race track to show what the shops can do. Actually some of the biggest HP cars we've built have never been drag raced, it's a shame actually.

I post a lot of dyno sheets here on EVOm and over on our site. Just like the one I just posted above. The power, the curve and the smoothness of the sheets should be a good indication of how the parts work.

 

Pics!! I wanna see what the best head you can buy looks like...

 

I think that pictures speak for a thousand words! This will also help the OP on its original inquiry! Which head to get?

A very important aspect is that we can use those pictures as a benchmark of what you should expect when you receive your head.

Here is one good example of a detailed picture.... hope that TTP does not mind me posting this picture.

 

Detailed picture yes...relevance to original topic none...