DatsWeird Posted October 18, 2017 Report Share Posted October 18, 2017 Title says it all, SU Air Filter Set 650-275. They drilled the air filter cap to bolt vertically with the dashpot and it interferes with the backing plate. On top of that, it fits so poorly as to cause the backing plate to bow from the interference of the screw head on the dashpot. There's a 1/16th inch gap between the carb throat and backing plate, they said add a few more gaskets :angry: Guess what happens when the gaskets deteriorate and a bolt comes out inside the filter? And how do you get a tool to the top bolt without removing the dashpot? Its a phillips head btw. They won't stand behind their products, last purchase I'll make from them.. Thought I'd let ya'll know, these are priced at 60 bucks buyer beware. Here is the k&n version showing the bolts holes horizontally for attaching the filter tops. Hope Matt from zcardepot is a member on here; you sir are a :poop: Quote Link to comment
Ranman72 Posted October 18, 2017 Report Share Posted October 18, 2017 they make screws with thinner heads would this be a helpful option and yes i agree its a design flaw 2 Quote Link to comment
racerx Posted October 18, 2017 Report Share Posted October 18, 2017 Get your money back 1 Quote Link to comment
datzenmike Posted October 18, 2017 Report Share Posted October 18, 2017 You should have something like a velocity stack and then a thicker filter. There's room but those things, the air has to make a 90 degree bend. Maybe stack two more filters on with longer bolts to get that outside plate away from the carb opening. 2 Quote Link to comment
DatsWeird Posted October 18, 2017 Author Report Share Posted October 18, 2017 In the process of trying to get refunded; Going to have to go through the credit card company unfortunately. I thought about redrilling the filter cap screws horizontally but thought I'd give them a chance to make it right and let them know they have a faulty product but they could care less I agree datzenmike, I remember reading something about dual air filters setups losing power over factory air box with built in velocity stacks. That 60 dollar price tag got me though.. Off to scour ebay on the hopes of finding a stocker under a couple hundred Quote Link to comment
DatsWeird Posted October 18, 2017 Author Report Share Posted October 18, 2017 they make screws with thinner heads would this be a helpful option and yes i agree its a design flaw I figured they had studs welded when I saw the initial picture. Could use a smaller screw head but still can't get a tool to it.. Just find it odd these made it through R&D to be sold Quote Link to comment
wayno Posted October 18, 2017 Report Share Posted October 18, 2017 I believe what I did was grind the head flat and I put a nut on the inside to hold it in place(keep it from turning), it is poorly designed. I am thinking it was designed for British carbs and they figured out they would work on Japanese carbs, so they sell them for them also. Is the inside hole for the carb the correct size or is it smaller? 1 Quote Link to comment
Angela Posted October 18, 2017 Report Share Posted October 18, 2017 I run a set of SU's on my wagon with an ITG filter set up. I've been really happy with it. A little pricey but well worth the investment IMHO. I've also had a good experience with their customer service. Best of luck & I hope you can get a refund. https://itgfilters.net 2 Quote Link to comment
DatsWeird Posted October 18, 2017 Author Report Share Posted October 18, 2017 I believe what I did was grind the head flat and I put a nut on the inside to hold it in place(keep it from turning), it is poorly designed. I am thinking it was designed for British carbs and they figured out they would work on Japanese carbs, so they sell them for them also. Is the inside hole for the carb the correct size or is it smaller? It does appear smaller now that I look at it Quote Link to comment
thisismatt Posted October 18, 2017 Report Share Posted October 18, 2017 It does appear smaller now that I look at itThat's what she said 4 Quote Link to comment
wayno Posted October 19, 2017 Report Share Posted October 19, 2017 Is the hole 1 1/4 inches instead of 1 1/2 inches like it should be? If it is not the same size you will need to return it or grind the hole out to match your carbs, I suppose if you drive using the top 1/2 inch of the pedal it will not matter. Quote Link to comment
Mattndew76 Posted October 19, 2017 Report Share Posted October 19, 2017 I could machine some purdy stuff for this setup if anyone wants to get on board.... 1 Quote Link to comment
DatsWeird Posted October 19, 2017 Author Report Share Posted October 19, 2017 I was thinking the hole on the carb was smaller than the plate and sure enough 1 3/4 Quote Link to comment
dgi Posted October 19, 2017 Report Share Posted October 19, 2017 I could machine some purdy stuff for this setup if anyone wants to get on board.... Mattndew76, You mean something like this? The baseplate even has a machined in velocity stack. 2 Quote Link to comment
racerx Posted October 19, 2017 Report Share Posted October 19, 2017 Purdy, what a difference Quote Link to comment
Mattndew76 Posted October 19, 2017 Report Share Posted October 19, 2017 Mattndew76, You mean something like this? The baseplate even has a machined in velocity stack. Very much like that. Quote Link to comment
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