Oh yes

chdesign

Member
OK its almost done here it is uncoated.....goign to sandblast it monday to get all the loose debri off and make it a nice even bare metal then it gets coated then the hell ported out of it.....
 

Attachments

  • dcp_0001.webp
    dcp_0001.webp
    128.9 KB · Views: 336
im just curious on something
this is just a question so dont get mad!
why is it that the wastegate is on one of the primary runners to the flange?
also how was that welded?(what kind)
 
It was welded with a Lincoln Electric 174 amp welder by me the welds are that pretty cause I was getting used to a new welder but they are solid. The wastegate is placed there due to where I wanted the wastegate to sit. As long as there is an opening for the exhaust gases to pass through then it is fine. I know it will distrupt the flow of gasses in that one runner a little but nothing that I will be worried about.
 
well thats fine that you want the gate there but the gas interuption wasnt my main concern.
how can you regulate boost effectively when you have it placed on one runner?
if it was on a collector then you could still place it where you wanted
also you can make an adapter after the flange to pipe a wastegate in before the turbo
sorry for the critisism.
it looks nice and the welds can be cleaned up thats no big deal.
 
I know there are just some space contrants the FP-DE has a shorter block than the FS-DE so an adapeter after the flange is out of the question. Yes is is on one runner but all the runners merge into one collector and have a smooth flow into one another you can look into the turbo inlet flange and see thorugh the wastegate flange. I have made manifolds before like this and had no problems with boost regulation....yes if the runners were singular and didn't merge until the turbo then yes there would be problems but the merger point on this manifold is at the highest point you see where the runners come together. There will be no problem with boost regulation espescially at the low boost levels we can run
 
as for the welds i'm nto going to grind them down as when you grind down a weld it reduces the strength of the weld....I have no concerns though with cracking on this manifold as I didn't use the run of the mill CAST weld-els I opted for the slightly more expensive forged steel Weld-els better heat cycle and higher tensile strength.
 
well good lick man let us know when its installed and how you make out thru the long run
 
i will should all be done and installed easter weekend depends on if I get my new front bumper or not to accomidate the FMIC. Thanks for the critisism though man it never hurts to hear anothers opinion :) but like I said I have done setups like that before and have had no problems.....I mean look at max revs cast manifolds for hondas the wastegate flange is on the far runner along with ALOT of the cast turbonetics manifolds. As long as there is a path of lower resistance for the gases to pass around the turbo there is no problem......the very very first manifold i made from 16 gauge mild steel cracked like a mofo but at the smallest cracks beginning it kept my boost from going over 5 psi just from that and i couldn't up it any with my boost controller due to that small crack it doesn't take much to limit boost in a low boost app.
 
any way i have always been partial to internal wastegates
i know they say you cant use them on high boost but i have with minimal problems
your car is a 1.8?
 
Looks nice CH:)
Did you mig or tig it? Mig I take it?
It will look a lot better when you coat it. Are you going to high temp coat it or ceramic coat it?
We use the same weld els that you are utilizing as well....good stuff.
I agree with you on the mild steel, that stuff will not last longer than 1 year. And stainless is not to great, lots of thermal expansion. (really easy to weld up though)
how can you regulate boost effectively when you have it placed on one runner?


Your wategate placement looks fine. Yes the optimal place would be in the collector but packaging and design constraints limit things. Our wastgates are mounted in an individual runner and boost spike is not a problem when running an external. More issues actually arise with external wastegate setup when they are plumbed back into the downpipe incorrectly
it looks nice and the welds can be cleaned up thats no big deal
Its alot more difficult to weld weld els than what everybody else uses (mild and stainless) These materials are lot more easier to work with and you can have nice and pretty seamless welds on those materials with a Tig.
But the fact is that mild steel is crap. I sold a mild steel manifold to a local customer about 5 moonths ago (Thats what he wanted because it was more cost effective) But now he has a cracked manifold. CH learned the hard way just like I have personaly from past experiences.
Yes the welds aint that pretty but I think you did a pretty good job for the experience you have. I am not a welder by any means and I personaly do not design manifolds....but it is a very dificult blend of art and science:)
 
if you don't mind me asking now thick is the main mounting flange because from the picture it doesn't look that thick
 
The turbo inlet flange is 1/4" and the head flange is 1/2". the inlet flange is thinner and the downpipe flange is the same thickness but I had no wraping issues and they turned out just fine. I will be high temp coating it for now until I verify the welds hold I have no doubt that they won't hold up cause i know they will this is just a just in case thing once I drive on it for about 2 weeks I will check for stress issues and then if I see none then it will go to performance coatings to get ceramic coated. The turbine housing has already been coated with a thermal barrier from them to keep underhood temps down so it shoudl turn out nice.
Terry I agree on the external plumbing into the downpipe you can have some nasty boost spikes. Mine will be plumbed into the downpipe but the way I am constructing it I will ahve 3 bolt flanges on everything. The first bend off the turbo will go about 4 inches off the bend then to a flange basically a O2 housing. I'm going to merge the dump pipe into the downpipe after that flange so I have a good 12-15 inches of travel before the gases from teh wastegate merge into the downpipe. So I shoudl ahve no problems now the issue of finding a 1.5" flex-pipe.
 
perfworks said:
any way i have always been partial to internal wastegates
i know they say you cant use them on high boost but i have with minimal problems
your car is a 1.8?

yup FP-DE power here baby. The FP-DE is a destroked version of the FS-DE kinda like the B16 B18 B20 so on so forth in hondas.....just as the B16 is shorter in deck height than the B18 so is the FP-DE to the FS_DE but the FP-DE has alot better rod ratio and also thicker rods mated with hypereautic pistons. SO the FP-DE is a little beefer motor than the FS-DE I ran 8 psi non-intercooled on a T25 with a 60 DRY shot of nitrous on top of it for 2 months and no adverse effects compression is still good and never blew my motor. DO that on a FS-DE and you will be picking up fragments of your motor off the road. Yes the FS-DE has more torque but with the turbo they are very very equal As SITS kit pulls 198 whp on the stage 3 at 6.5 psi I should be able to pull close to the same number wiht my setup. Also yes Terry its MIG welded you can look along the runners and tell where I started to get used to the welder the welds on the #3 runner (last one I did) the welds are a smooth bead where as on the #1 and #4 runners they aren't too pretty but like I said grinding weakens the weld so that won't happen if I do anything I will grind it and then reweld over the grind to make a nice smooth bead but I doubt I will do that. Anyways I'm starting on the IC piping tomorrow so I will get pics of that with the Additional injector bosses welded in and the BOV in place. I will keep you all updated.....right now if all goes as planned it will be installed Easter weekend IF i get my new front bumper in time.
 
not bad, but why may i ask did u not just go with terrys manifold? wouldnt that be alot easier? alot more reliable too
 
My manifold will be just as reliable as Terry;s manifold and it is a larger inner diameter than Terry's. Also why spend 700+ dollars on a manifold I can make myself for 80? Where is the logic in that. Plus I'm not using a T3 I'mm using a Blitz K26 turbo totally different flange. I'm using the same exact material that Terry uses in his manifolds yes my welds aren't as pretty just just as strong and solid.
 
Hey CH
Is that O2 simulator you posted of before still working for you?
I want to get one, as I hate the CEL, but didn't know whether to get that one or the one Terry is selling.
 
i cant understand why you guys are getting CEL's
where are the o2's mounted
next to each other on the downpipe?
 
Back