Update on the Ebay T3/T4 with V-Band - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 05-23-2010, 01:59 AM   #1
Elite Member
Thread Starter
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default Update on the Ebay T3/T4 with V-Band

So from a week or two ago, I said I purchased this turbo:

http://cgi.ebay.com/ebaymotors/ws/eB...#ht_5222wt_939

Some people had doubts about the downpipe clearing, and im happy to say it does. It is not optimal (the bend out of the turbine housing) But it works well.

Please ignore the **** welds, all I have to work with is a Harbor Freight Flux Core! They are structurally in tact tho.

The mani is a BEGI unit.

Spool is ok, laggy but hits hard which is what I like










cardriverx is offline   Reply With Quote
Old 05-23-2010, 02:12 AM   #2
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

good stuff man. how much better do you think the downpipe clearance would be if it was welded to the flange instead of on v bands? is that a 3" downpipe?
18psi is offline   Reply With Quote
Old 05-23-2010, 02:23 AM   #3
Elite Member
Thread Starter
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

Quote:
Originally Posted by 18psi View Post
good stuff man. how much better do you think the downpipe clearance would be if it was welded to the flange instead of on v bands? is that a 3" downpipe?
a TON better, but i wanted V band. It is 2.5" That transitions to a 3" at the transmission.
cardriverx is offline   Reply With Quote
Old 05-23-2010, 02:29 AM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

So someone clear this up for me once and for all cause I see that almost everyone here (with an internally gated churbo) has a downpipe that is fairly small (2"-2.5") that TRANSITIONS into 3" and eventually dumps into a 3" exhaust:

isn't that 2-2.5 bottleneck right after the turbo and before the 3" making the whole exhaust basically 2.5"? Isn't your exhaust as free flowing as its most restrictive section? Or is that logic not applied in this specific case?

I want to know cause its almost impossible to have a 3" COMPLETE downpipe with an internally gated turbo. (in fact I'm pretty sure its not)
18psi is offline   Reply With Quote
Old 05-23-2010, 10:51 AM   #5
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,245
Total Cats: 291
Default

Looks like you had another inch to work with IF you wanted to decrease the drop/radius of the exit from the wg housing.
m2cupcar is offline   Reply With Quote
Old 05-23-2010, 11:31 AM   #6
Newb
 
Join Date: May 2010
Location: Los Angeles, CA
Posts: 12
Total Cats: 0
Default

Lol right on man. Miata's are known for top end! Great for highway
How's it perform? Stock internals?
TOPSECRET is offline   Reply With Quote
Old 05-23-2010, 11:31 AM   #7
Elite Member
iTrader: (28)
 
Join Date: May 2008
Location: St. Augustine FL
Posts: 2,310
Total Cats: 2
Default

Quote:
Originally Posted by 18psi View Post
So someone clear this up for me once and for all cause I see that almost everyone here (with an internally gated churbo) has a downpipe that is fairly small (2"-2.5") that TRANSITIONS into 3" and eventually dumps into a 3" exhaust:

isn't that 2-2.5 bottleneck right after the turbo and before the 3" making the whole exhaust basically 2.5"? Isn't your exhaust as free flowing as its most restrictive section? Or is that logic not applied in this specific case?

I want to know cause its almost impossible to have a 3" COMPLETE downpipe with an internally gated turbo. (in fact I'm pretty sure its not)
If that were the case wouldn't it be like saying that since the turbine exit is only something like 2" we'd have a 2" exhaust? just saying...
p51hellfire is offline   Reply With Quote
Old 05-23-2010, 12:03 PM   #8
Junior Member
iTrader: (6)
 
Join Date: May 2007
Location: Tennessee
Posts: 203
Total Cats: 12
Default

Thanks for the update on this! How much boost are you running? Are you seeing any creep or any other boost control weirdness? I'm considering going this route with the Ebay cast manifold and churbo with the internal/v-band.
underdog is offline   Reply With Quote
Old 05-23-2010, 12:38 PM   #9
I EAT CUM
iTrader: (6)
 
Join Date: Sep 2008
Location: Redneck, Texas
Posts: 1,218
Total Cats: -1
Default

Man, I don't know how you were able to make that fit with the vband. On mine, I sliced off the vband and welded the begi downpipe to the hole. Looks good!
Turbo_4 is offline   Reply With Quote
Old 05-23-2010, 01:34 PM   #10
Elite Member
Thread Starter
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

around 11 psi for the moment. I'm still dialing in the ms2 boost control, but so far so good, holds great.


Quote:
Originally Posted by underdog View Post
Thanks for the update on this! How much boost are you running? Are you seeing any creep or any other boost control weirdness? I'm considering going this route with the Ebay cast manifold and churbo with the internal/v-band.
cardriverx is offline   Reply With Quote
Old 08-31-2010, 10:16 PM   #11
Junior Member
iTrader: (6)
 
Join Date: Aug 2010
Location: Jacksonville, FL
Posts: 197
Total Cats: 1
Default

Quote:
Originally Posted by 18psi View Post
So someone clear this up for me once and for all cause I see that almost everyone here (with an internally gated churbo) has a downpipe that is fairly small (2"-2.5") that TRANSITIONS into 3" and eventually dumps into a 3" exhaust:

isn't that 2-2.5 bottleneck right after the turbo and before the 3" making the whole exhaust basically 2.5"? Isn't your exhaust as free flowing as its most restrictive section? Or is that logic not applied in this specific case?

I want to know cause its almost impossible to have a 3" COMPLETE downpipe with an internally gated turbo. (in fact I'm pretty sure its not)
That DP will never bottleneck your flow.

You're right, it is almost impossible with our setups. To answer your question; as long as the diameter eventually increases to 3" or whatever it is you're looking for, you'll be ok. What's NOT ok is an ACTUAL bottleneck. Example: you have a 2.5" DP leading to a 2"(or 3"!) cat/mp to a 2.5" muffler.... not good. As long as there is an increase throughout, you're good to go.
Iroquois Pliskin is offline   Reply With Quote
Old 08-31-2010, 11:07 PM   #12
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

Watch the post date newbie.
curly is offline   Reply With Quote
Old 08-31-2010, 11:12 PM   #13
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,074
Total Cats: 253
Default

viperormiata is offline   Reply With Quote
Old 08-31-2010, 11:25 PM   #14
Junior Member
iTrader: (6)
 
Join Date: Aug 2010
Location: Jacksonville, FL
Posts: 197
Total Cats: 1
Default

Answered his question when you guys were too lazy to
Iroquois Pliskin is offline   Reply With Quote
Old 08-31-2010, 11:30 PM   #15
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

We prefer just posting pictures of two dudes in tights and capes.
curly is offline   Reply With Quote
Old 08-31-2010, 11:35 PM   #16
Elite Member
iTrader: (9)
 
Join Date: Sep 2008
Location: Livonia, Michigan
Posts: 5,684
Total Cats: 10
Default

^^ LMAO 1945!!!! That sounds more like it
buffon01 is offline   Reply With Quote
Old 09-01-2010, 09:57 AM   #17
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,904
Total Cats: 1,793
Default

Quote:
Originally Posted by Iroquois Pliskin View Post
Answered his question when you guys were too lazy to

Except you answered it incorrectly and you obviously have little grasp on exhaust flow.

Braineack is online now   Reply With Quote
Old 09-01-2010, 06:46 PM   #18
Senior Member
iTrader: (1)
 
Join Date: Oct 2008
Location: Trailer County
Posts: 530
Total Cats: -9
Default

mazpr is offline   Reply With Quote
Old 09-02-2010, 02:37 PM   #19
Elite Member
Thread Starter
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

what is going on in my thread lol.
cardriverx is offline   Reply With Quote
Old 09-02-2010, 02:51 PM   #20
Junior Member
iTrader: (6)
 
Join Date: Aug 2010
Location: Jacksonville, FL
Posts: 197
Total Cats: 1
Default

Dunno... some n00b came in and caused viperormiata to post a pic of men in tights, which eventually made Braineack go full retard, with his little knowledge of exhaust flow
Iroquois Pliskin is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:11 AM.