I was talking with Bob sometime last year when he mentioned about fitting 430 log headers on his v8 engine. Since there is nothing like that for the 320 engine, I figured this might be my next project. Simply put, the mod involves romoving 1 runner and reorienting the discharge flange. More pics to come

 

I am not sure but if you were to put the log style off a srt6 or slk32 which produces more power than the NA 320 would that be sufficient enough? I doubt your NA is anywhere near that type of power and it may just bolt on...

Anyone with experience on the difference between the srt exhaust manifolds and the na exhaust manifolds?

 

We are getting headers!
Turbomar rocks!!!!!!!!!!!!!!!!!!!!!!!!!

 

Hey Beaner!

I was under the impression that the N/A and Kompressor engines shared the same exhaust manifold. I did a search on Ebay and some recyclers and all I could find is the N/A listing. You have to admit that these OBX s/s with extra thick head flanges are sharp looking tho! All under $300 + my time

 

Thanks Tuna

I'll try to keep you posted on the end result as per our PM

 

Now this is exciting.

 

think these would produce any extra power for the n/a?

 

Probably slight gain at upper rpm range. The runners and main conduit are all slightly larger. I am playing with an A100 tablet combined with the Torque Pro APP to calculate KW's at the wheel so if there is any gain that figure will change

 

If you make them, buyers will come. I'm interested.

Les

 

Any update on this project?

 

During the summer months, I usually spend 2-3 hrs, sometimes more, on the weekend on my hobby. I completed the LH header discharge flange angle correction. The 4th pic shows comparaison to the OEM header

 

I'm extremely impressed. That looks fantastic.

 

Looking good.....any idea of a time frame for a completed set>

 

Go Mario Go.....Go Mario Go .... Nice work !!!

 

i would be interested if you were going to make a couple of sets

 

Tentatively, I think the log headers will be ready to bolt on in 1 month. However, I'm not looking forward to swaping them. Obviously, it requires jacking the engine up at least 3 inches to get to the bottom row of bolts.

A O2 sensor bung also has to be tigged onto the header. I assume the 430 engine has the upstream O2 sensor on the downpipe.

Presently, I am not able to mass produce those things. However, I will have the tooling to do so in the future. The main goal for now is to get this to succesfully work on my Crossie

 

You know you can't just make 1 set and leave us all hanging!
Even if you get good numbers from these you could still set something up to have them done from your set so we could get the same . Hopefully the performance #'s will reflect your hard work and efforts on this project.
Thanks

 

BTW what size are the primary's and the collector?

 

Please keep us informed as to progress, what cost might be, when will they be finished?

Even if the HP increase is low it may cause an increase in torque on the bottom end, which would be good.

 

hi turbomar
i bought a pair of the obx for 180 shipped, around xmas on make an offer on ebay w vendor.
watch their sales.
any how we cut off the front tubes and welded in metal to fill the log.
put on the o2 bungs, and cut the tube to the outlet flange and then my welder went to prison. his house repo'ed and my jigs were lost in his transition to federal housing. for awhile,... modified weapons.
so here i sit, needing the jigs as my stock headers were long since put back on the car.
turbomar,... can you help?. i have no interest in making more, only finishing mine.
a loan, a lease , a rent, i'll swear on my canadian daughters head i wont duplicate the jig or make more sets.
i'd swear on the wifes head but she's dead and gone

to the questions on size
primaries are about 1.5- 1.625" and accept stock gaskets.
the main log is 2.0- 2.1"
outlet size of the header flange is 1.75" but it can be enlarged to 2.0", the size of the downpipe fm needswings or the inlet of the cats.
the header flange thickness is .375"
as you can see the outside of the obx is very nice and the inside somewhat rough and needs some cleanup inside of dross, or whatever the welding debris is called
the hardest part of the stock header removal was the overtightened (by dealer) factory copper nuts to the head studs. they will round easily and a six point socket w wobbles and u joints worked the best for us.
space is tight but when you undo the motormounts it just takes patience.