Coupler lid options for 102 SD to TB
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TECH Apprentice
Joined: Oct 2008
Posts: 332
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From: North Carolina
Coupler lid options for 102 SD to TB Hey guys what do you guys remondend for going from a 102/102 to the lid. I already have the SLP lid but leaning towards the 104 if it will allow better flow. Any advice would be appreciated as far as couplers + options. I know I could have searched and searched for dead threads and found a answer but wanted a response that wasn’t 4 years old without an hour of research.
Thanks for the help! Car is a 383 Ls1 block stroker guessing around 480rwhp.
Thanks for the help! Car is a 383 Ls1 block stroker guessing around 480rwhp.
I went with a 22° 4" coupler from intake hoses .Com I believe. You can search under my user name for my H/C/I build thread, there is some discussion on it towards the end. I also used an FTP 104 lid, no sense in necking down to the SLP size. The ftp 98 may work just as well if you are going SD. I think the 98 and 104 might have the same minimum diameter with the 104 being expanded at the end so you can slide a MAF right in there. Might be worth a call.
There are some 4" silicon couplers on Amazon from HPS, I bought a 4" dia by 4" long for my 105mm TB to 100mm MAF, and had to trim it to fit the length and angle. The longest I see on there is 6", but I'm not sure if that would be long enough for your SD setup.
Otherwise you can pretty much get a custom one from intakehoses . com as mentioned. I used them years ago for a 85 maf to 90 tb coupling, worked very well.
One thing I'd be aware of though - the straight silicon couplers are a bit stiff vs rubber. If your motor torques over a lot (say if you have stock motor mounts) it can crack the lid.
Otherwise you can pretty much get a custom one from intakehoses . com as mentioned. I used them years ago for a 85 maf to 90 tb coupling, worked very well.
One thing I'd be aware of though - the straight silicon couplers are a bit stiff vs rubber. If your motor torques over a lot (say if you have stock motor mounts) it can crack the lid.
