quick question, i just recieved the new tial mvs 38mm wastgate flange, and i know the w/g is smaller than the old 38mm, but the v band is so small that it fits inside the w/g elbow on the manifold which is the usual 1.5" sch. 10 ss pipe any suggestions, pics.
thanks..

 

i don't use 1.5" sch 10 for the standard 2 bolt 38mm wg flanges. i use 1.25", it is a better fit. as for solving your problem, i'd cut the whole elbow off at the collector and weld in a 1.25" if you can make it work.

 

I just welded a few to schedule 10 1.5" without any problems. Its a perfect butt weld fitment.. You sure your not using the wastegate dump vband flange?

 

positive its the correct flange.. got any pics?

 

Well i've welded 6 of them in the past 2 weeks and had no issues using 1.5" sch 10

I'll see if i can snap some pics..

 

ill post a pic of my situation tomm. it seams to fit in the pipe perfictly, not over it like it should..

 

38/25.4=1.496"
sch 10 pipe = 1.6" ID

So I'm guessing it should fit inside the pipe with the numbers above...switch to 1.25" pipe.

 

You must be using a 44mm flange than...

 

No it's MVS 38mm not 44mm

i'll take some pics today..

The Schedule 10 pipe doesn't not fit into the recessed groove on the vband flange but it will line up perfectly for a butt weld with the flange..

 

What? Dude, 38mm is the ID- the part need to have some kind of thickness to it- if the OD is only 44mm (roughly the id of 1.5" shcedule 10) then it's only 3mm "wall" thickness. I kinda doubt it. Even if it is, that should still be weldable.

Why anyone builds a manifold with 1.6" ID primaries, and then runs a 38mm wastegate to begin with though is beyond me.

Eithere the primaries are oversized or the 'gate is undersized.

 

Why anyone builds a manifold with 1.6" ID primaries, and then runs a 38mm wastegate to begin with though is beyond me.

Eithere the primaries are oversized or the 'gate is undersized.[/QUOTE]


that's my point, with the new tial mvs 38mm w/g it's smaller and can handle more then the old tial 38mm..

 

I dont' have a camara here today to take pics but i measured the vband flange and 1.5" sch 10 pipe..

The flange is 1.920~1.925 roughly O.D.
1.5" sch 10 pipe O.D. is roughy 1.925

The pipe is not going to go in the flange. your going to butt weld it to the flange..
It fits so weld the damn thing already..

 

I imagine the new design might flow better, but ultimately 38's are good for cast/log manifold apps where a relatively small t3/t4 or similar is in use.

Building a supposedly efficient large diameter tube manifold and then using a wastegate with a valve 6mm smaller than the ID of ONE primary tube is certainly not ideal, regardless of what flanges it has.

I know you have what you have, but it's somehting to keep in mind.

As has been said though, it should work anyways.

You should probably post a pic- that'd help.

 

Remember before you comment on what you think is ideal or not, you could also use multiple 38mm wastegates...

 

I have both a 38mm v-band and 44mm here in my hands at this very moment, and on the 38mm the wastegate inlet flange is 1.93" OD at the weld end. The wastegate discharge is 1.675" OD at the weld end. You must be using the wrong one, or your pipe is not 1-1/2" SCH 10. I can take a picture if you'd like.

 

A pic would be great, I'm trying to weld the 38mm to the 1.5" sch. 10 pipe be knowticed that the weld part of the vband is slipping inside the pipe so the o.d. Of the clamp flange is flush with the o.d. Of the pipe, should I make an adapter of some sort to make it fit, or just get the smaller 1.5" o.d. Pipe to fit in the weld joint of the vband, if I do should I worry about volume? That would make it like 1.25" I.d.
Btw. This is a twin w/g mani. For a drag car

 

I still don't understand.. You either have the wrong flange or your not using sch 10 1.5" pipe...

Agtronic also proves my point that the weld end of the flange is 1.92~1.93 and 1.5" pipe O.D. is around the same.. It should not be slipping inside the pipe.. It should be almost flush with it... You got something wrong...

 

i agree.. but i double checked the part number and the pipe even says 1.5" sch. 10 ill have a pic tonight

 

measure it...

 

jeez... lol

 

the I.d. In the vband where the w/g pipe fits inside of is 1.5", the o.d. Of the 1.5" sch. 10 pipe is 1.95" I'll have pics in a few mins.

 

This is wayyyy too complicated. Just weld the hole shut. He will thank you for all the extra power.

 

sorry for the blurry pics

 

Let me guess. He didn't give you the whole wastegate, just the flanges.

 

Not sure what's going on there. But i have welded 1.5" sch 10 and the o.d. is 1.92 and the flange is the same and it butt welds perfect..

Measure your flange