4 bolt vs. 5 bolt
10-01-2006, 03:44 PM
#1
4 bolt vs. 5 bolt
Hey guys. I am piecing together a turbo kit. I will be using a garrett t3/t4 57 trim .63 a/r turbo. What is the difference between the 4 and 5 bolt. The 5 bolt seems to be a little more money. Is it better performance? fitment? Spool? anything?
Thansk
Thansk
10-01-2006, 04:45 PM
#2
Honda-Tech Member
Re: 4 bolt vs. 5 bolt (TurboEM1)
no it just takes a different exhaust flange on your downpipe thats all. the 5 bolts were designed so that a flapper housing can bolt on and use an internal gate if you choose to do so.
10-01-2006, 05:31 PM
#3
Who is Mr Robot?
iTrader: (2)
Join Date: Jul 2004
Location: ATL - Where the Pimps and Players dwell
Posts: 21,474
Likes: 0
Received 10 Likes
on
10 Posts
Re: 4 bolt vs. 5 bolt (JSPECSIR)
5 bolt housings are generally larger overall.
the 4 bolt housings have a smaller footprint
4-bolt is to be used with an external wastegate
5-bolt has the option of using an interal flapper if the housing was cast with the flapper hole
the 4 bolt housings have a smaller footprint
4-bolt is to be used with an external wastegate
5-bolt has the option of using an interal flapper if the housing was cast with the flapper hole
10-01-2006, 05:58 PM
#4
Honda-Tech Member
Join Date: Sep 2004
Location: PA, United States
Posts: 629
Likes: 0
Received 0 Likes
on
0 Posts
Re: 4 bolt vs. 5 bolt (wantboost)
I've also heard that the 4 bolts will flow better because there is less restriction with the flapper hole in the turbine housing. Now it might just be a small amount, but any little bit helps. I always use 4 bolt.
Thread
Thread Starter
Forum
Replies
Last Post
gyrluknouwantme
Forced Induction
2
11-06-2005 10:23 PM
H22coupe
Forced Induction
3
11-20-2002 01:59 PM
