Drop subframe to install BEGI DP?
After some searching I've come to the conclusion that I'm not the only one having some problems with the BEGI S internal gate turbo downpipe.
The issue is that the DP doesn't fit into the body when assembled, it comes in two pieces and you slide them together from under the car and from the engine bay, a rod pulls the two together in a slip joint, but it commonly breaks and causes grief. Many people just weld it together or switch to a V band setup. I'm personally happy with welding, however the flanges on my DP dont allow any room to slide the pipe in from the top OR bottom unless its in two pieces. https://scontent-b-atl.xx.fbcdn.net/...4a&oe=54778D7B https://fbcdn-sphotos-a-a.akamaihd.n...34140456_n.jpg I was thinking about dropping the subframe a few inches to allow room, is this a viable option? My reading points to yes, but I haven't found any posts from people who may have done it. I've done this exact same thing for the downpipes in my audi A6, the whole engine and subframe had to move, Experience says it will work, but I've never done this on a miata. |
Maybe disconnect the PPF and rock the engine forward on its mounts? Doesn't look like you need much.
Also, I think the reported problems on the slip joint are overblown. I've got the BEGI Greddy replacement on my car. It has a slip joint too. No problems, although I did secure the downpipe to the OEM transmission exhaust brace using one of those stainless steel band clamps you see in the parts stores. |
Originally Posted by hornetball
(Post 1160577)
Maybe disconnect the PPF and rock the engine forward on its mounts? Doesn't look like you need much.
Also, I think the reported problems on the slip joint are overblown. I've got the BEGI Greddy replacement on my car. It has a slip joint too. No problems, although I did secure the downpipe to the OEM transmission exhaust brace using one of those stainless steel band clamps you see in the parts stores. |
You were never any good at Dr. Operation as a child were you?
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I am pretty sure I brought mine in from the bottom up.
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I know my Artech 3" has to be put in with the manifold off.
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Originally Posted by curly
(Post 1160727)
I know my Artech 3" has to be put in with the manifold off.
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2 Attachment(s)
I have Begi Separated gasses down pipe 3" that is welded together. I put mine in before the manifold as well.
Edit: I also cut into the edge of the lip and folded over the lip to give myself an extra 3/4" to 1" of space to work with. I was also having boost creep because the wastegate couldn't open all the way. I added another t25 flange to the downpipe to give the flapper enough room to open all the way. If i was at home I'd take a picture of what i did but it turned out clean and gave me some nice space. https://www.miataturbo.net/attachmen...1&d=1409160514 |
or this http://www.mekalummezar.com/carpics/ul6.jpg :party:
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you know you can rotate the DP into any position you deserve to make it fit down the tranny tunnel...the flange doesn't HAVE to point in the correct direction to get it down the hole...
I also dont see why so many people have issues with their slip joints. I ran mine without a bolt/welds/glue/gum. |
Originally Posted by curly
(Post 1160727)
I know my Artech 3" has to be put in with the manifold off.
Originally Posted by Jeffbucc
(Post 1160874)
I can vouch for this, at least for removal. Much easier with everything connected to the manifold.
For my Artech pipe, I had to loosen the motor mount and jack the engine up to get about 1/4" clearance. It didn't matter if the manifold was in or not. Either way, small fish compared to tracking down the damn oil galley plug leak. |
Originally Posted by Braineack
(Post 1161640)
you know you can rotate the DP into any position you deserve to make it fit down the tranny tunnel...the flange doesn't HAVE to point in the correct direction to get it down the hole...
I also dont see why so many people have issues with their slip joints. I ran mine without a bolt/welds/glue/gum. The issue is clearance with the block and frame, I've tried rotating it a number of ways and it comes VERRRRY close to making it through but something is always just a few millimeters in the way. I'll give rocking the engine a little a try. Miata is up as high as I feel safe putting it so I'll also try worming it in from the bottom. |
Honestly when I dropped the engine back in with the turbo & downpipe on the engine it slipped into the bay like buttah.
Overkill, but just so you know.:giggle: |
Damn, I wasn't so lucky because the downpipe would hit the steering column. Even now, as soon as I loosen the V-band, it wants to pin up against the column.
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Originally Posted by Jeffbucc
(Post 1161676)
Honestly when I dropped the engine back in with the turbo & downpipe on the engine it slipped into the bay like buttah.
Overkill, but just so you know.:giggle: rocking the engine to install this DP is just as simple as changing a distributor to me now. lol |
Yeesh, reminds me of my VW TDI. Have to remove the right axle and/or the lower subframe if you are unlucky to get at the downpipe/turbo. Not to mention they are all TTY bolts so you have to replace them after removal.
After taking apart 2 Miata and fully reassembling mine, nothing really scares me or is difficult now. Just don't want to have to remove the CAS/rear thermostat/rear coolant reroute. Hear that is a bitch. |
Unbolt the driver's side motor mount and lightly jack the motor up about an inch. I bet it will slide right in
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did the unbolt of the engine mount, DP dropped right in. worked great right up until my brother ran the car into a tree. D'OH
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Originally Posted by syty
(Post 1164624)
did the unbolt of the engine mount, DP dropped right in. worked great right up until my brother ran the car into a tree. D'OH
:brain: |
Originally Posted by Braineack
(Post 1164724)
retard.
:brain: https://fbcdn-sphotos-b-a.akamaihd.n...bf9bba850d626d now I just have to reconfigure my MS2 for VVT. but thats a ways off because im not stuffing that china charger into this thing. garrett time. |
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