where to get a 4" oval to 3" round throttle body reducer?

[Flash68]

I think I explained that right! Have the Holley StealthRam intake with 1000cfm TPI-style throttle body (about 4" oval) that needs to connect to 3" IC plumbing. Can't find where to get this piece..... any help?

thanks

[ironworks]

two pieces of 3 inch tubing and a cut off wheel and a welder. pretty easy deal.

Rodger

[Flash68]

two pieces of 3 inch tubing and a cut off wheel and a welder. pretty easy deal.

Rodger

Hey Rodger. I thought someone made this part? So it's a custom deal only?

[thedugan]

I need the same piece.

[J2SpeedandCustom]

Will one of these work? http://www.burnsstainless.com/OvalTubing/ovaltubing.html scroll down to the bottom of the page an oval to round transition.

[ironworks]

Those are all the same od in and out, just a change in profile.

[Flash68]

Yep, I checked the Burns site too but all I can find anywhere so far is a 4" oval to 4" round transition....

[awr68]

I swear I have seen them in silicone.....But can't find them now!

[Flash68]

I swear I have seen them in silicone.....But can't find them now!

Yeah I have looked a lotta places, and I talked to Turbo Hoses here in Livermore and they don't know about that piece either. He recommended a 3 to 4 round reducer, then a 4 to 4.5 that bends the 4.5 over the 4.25" oval part. W are gonna try to get the 3 to 4 piece to fit over the oval, which he said he has done one time, but it was a biatch!

Would really like to keep it to just one piece vs 2.

[mdprovee]

What about a rubber transition like mine. Goes from Round to oval.

[Flash68]

What about a rubber transition like mine. Goes from Round to oval.

It's an option, but I am trying to stay with all silicone if possible.

[bigtyme1]

Try mailto:[email protected] 909-673-9800 ext.324
He pretty much knows every configeration out there.

[Flash68]

Try mailto:[email protected] 909-673-9800 ext.324
He pretty much knows every configeration out there.

Thanks, I will call him tmrw!

[thedugan]

keep us updated

[Joel145]

PM Tom Nelson. Here is a pic from F-Bomb

http://www.hotrod.com/projectbuild/hrdp_0609_project_f_bomb_engine_build/photo_15.html

[ironworks]

If want one like what is on the F-bomb, it is just a matter of Circumfrence.

Figure out the circumference of the oval and the buy the round section of silicone tubing with that same measurement. If you mash the silicone round hose it will make an oval. It might actually be a 3" hose that could fit on a
4" x 2" oval. If not do a metal reducer after the silcone section.

Treadstone aluminum has quite a selection of silcone hose and aluminum tubing.

[Flash68]

PM Tom Nelson. Here is a pic from F-Bomb

http://www.hotrod.com/projectbuild/hrdp_0609_project_f_bomb_engine_build/photo_15.html

Thanks for the pic. I will send him a PM!

If want one like what is on the F-bomb, it is just a matter of Circumfrence.

Figure out the circumference of the oval and the buy the round section of silicone tubing with that same measurement. If you mash the silicone round hose it will make an oval. It might actually be a 3" hose that could fit on a
4" x 2" oval. If not do a metal reducer after the silcone section.

Treadstone aluminum has quite a selection of silcone hose and aluminum tubing.

Hey Rodger,

Yeah I talked to a couple places and they had me measure the circumference and divide by 3.14 (pi). This is the number that would be ideal for a round transition size. For me this number is 4.26". And no one makes a 4.25" piece so we are gonna try to do a 4" and make it fit with some massaging and lube (that's what she said :D).

I would rather not do 2 pieces and keep this transition short and allow more of the stainless piping to be exposes than silicone.

[Flash68]

Wanted to report back and say I found the perfect piece. It was a 4" to 3" reducer with the "hump" in it, and its length was about 4-1/8" which turned out about perfect. TurboHoses in Livermore had this one piece on their shelf as just a leftover part.

[deuce_454]

just use a regular round/round silicone reducer... believe it or not, it will fit an oval (sorry for the sarcasm.. but its flexible, believe me, i know from first hand experience, it fits)

[Flash68]

just use a regular round/round silicone reducer... believe it or not, it will fit an oval (sorry for the sarcasm.. but its flexible, believe me, i know from first hand experience, it fits)

Thanks, but had you read my post right above yours, you'd see that I did get a round to round reducer and it it fits nicely. ;)

[deuce_454]

Thanks, but had you read my post right above yours, you'd see that I did get a round to round reducer and it it fits nicely. ;)

ill remove my foot from my mouth next tuesday then... glad you got it sorted!