vrus

Another little project that I am working on...

I ordered a new set of AMG intake manifolds for our cars. I am sending them down to get Extrude Honed in Grand Rapids, MI.

When they get back from the Extrude Hone process, I will be sending them to my new friends at the ceramic coating company to get the 2,000F polished ceramic coating put on them (just like the exhaust system I built).

The extra airflow through the manifolds due to the extrude hone process coupled with the heat coating inside & out should help to improve airflow. Combining that with the Evosport phenolic spacers, I am hoping to see a good improvement in efficiency and flow.

The manifolds are on their way from Germany.. If this works well, I will use my current manifolds as cores and prepare a set for anyone else that wants in.. Then take your cores and go on to the next person and so on...

This should be an interesting project...

Cylinder Head

iTrader: (1)

You are a maniac and a soldier sir.

vrus

Thanks?? I think???

I know there is a compliment in there somewhere so thank you.

Cylinder Head

iTrader: (1)

It was definitely a compliment, you seem to be the one guy on this board who's doing more R&D on the E55 than Renntech and Kleemann combined and you're determined to make as much power as possible out of the car. Not to mention you're going ***** out with a motor that, if broken would be the price of a civic to replace.

I hope you reach that 700 mark soon.

blackbenzz

YESSSSS, finally benz guys modding their cars like they should! Great work and conitnue to push the limits!

BoBcanada

Victor i think even if you get 750hp you will never stop, then you would put a jet engines on the sides, next project would be fly your e55 around the world ETC

Grumpy666

I've not seen the inside of the intake manifolds. Can I infer from your post that they have individual runners for each cylinder and are not just open plenums?

chiromikey

i'm not familiar with the intake paths but wouldn't ceramic coating the inside of the intake manifold inhibit the proper mixing of fuel and air? ceramic coating will tend to smooth the surface which may not be a good thing.

Mad TKD

Vrus?

is the intake the same as the SLR one? Or does the intercoolers make it different?

Grumpy666

What you're referring to is true for a wet system (e.g., carburator or TBI). For a dry system that only flows air, smoother is better.

vrus

Thanks!

I have faith in the AMG crew for building a good engine.. I just try to choose my mods carefully to make sure I dont screw up what they created.

Thanks! I wont stop until I hit 700hp.

Hahaha.. I think once I reach 700hp I will be happy.. For how long I will be happy I am not sure..

No.. The inside of the intake manifolds do not have separate runners. It's just an open plenum. I know that the main benefit of the extrude hone would be for individual runners to smooth out the air flow BUT, I know it can't hurt, and having the walls being rough just causes turbulence so I am going to try it anyways.

The extrude hone will probably yield little to no increase in power, but, I dont want to leave any stones unturned so to speak.

The manifolds deliver the air post-compressor to the heads. It is a dry plenum. No fuel is mixed until it reaches the combustion chambers in the heads.

Ceramic coating the manifolds will ensure that the radiant heat from the engine block and compartment dont affect the air stream to the heads.

Nope. Completely different. The SLR intake manifolds are built into the intercoolers which seem to have the coating already on them. I believe that black colour they have is actually a heat coating rather than an anodized paint.

pshek

Kind of off topic, but did you port and polish the supercharger or intake manifolds yet? I'm a little confused about which part you're going to have extrude honed. Why not just port and polish it, then ceramic coat it. Is it the surge tanks, the two magnesium pieces on either side of the supercharger that have the ///AMG lettering?

MNG

i believe the parts that we are talking about getting honed are the parts that say AMG on each side of the S/C

vrus

Correct!

The insides of the manifolds have rough cast finish. I dont think the Extrude Hone will make a big difference if any, but, I know it can't hurt. I want the airflow as smooth as possible..

The ceramic coating will be a killer finish... Cant wait until they are done.

stevebez

I would think getting the heads gas flowed would yield much better gains ...

I would not bother getting the internals of the intake manifold smoothed out -I would just ceramic-coat them as they are.... any thots ?

EDIT: on second thots would not having the ceram coating keep the heat trapped in the chamber rather than radiating out of the manifold ... not sure whats heating what the manifold heating the ambient air or the ambient air heating the manifold... ????

vrus

Heads are being worked on Steve..

For the amount of money it costs to do the extrude hone, for me, it's piece of mind knowing its done and I dont have to worry if that part of the engine can be improved. They quoted me $250 so I am willing to experiment for that.. If the quote ends up being higher, I may skip it..

stevebez

U R DA MAN !!!!

2MANYCARS

You are the man, yes, but you also have too much free time. lolz

vrus

Thanks!

hehehe.. Actually I have NO free time.. LOL.. I run a fulltime business which operates 24x7 believe it or not (I am on call for all my clients) and I do the car stuff on the side.

vrus

Intake manifolds are still down at ExtrudeHone.. they were having difficulty getting the manifolds to stay put in their jig.. they kept lifting when they tried to push the media through it so they are modifying the jig right now.. Hopefully this wont take too much longer.

PDC

Hey guys, I Extrude-Honed the intake manifolds on my 92 BMW 850 (V-12). Bimmer tuner DINAN offered extrude-honed intakes for about $2500 a set and Extrude-Hone in PA did mine for about a grand. The insides of the runners felt as smooth as glass when finished. DINAN claims about a 20hp gain on their test car for this service, mostly above 4k RPMS. I will say, my 8 felt like it had a bit more life between 3500-5500 after the process. I know, it's an apples to oranges comparison, but I have tried it with favorable results on a naturally aspirated motor.