Dorman 615-183X intake
#42
i have the 615-183
it's not a true A to B test since I put a lil baby cam in at the same time, but considering how much fuel I had to add in the midrange of the VE table I'd say it's worth the hassles to get it to run.
I am not really impressed with the coarse thread screws into plastic...and I had to use epoxy to keep it from developing a vacuum leak in the rear. But hey it's cheap and flows pretty good.
Would not consider it for a boosted application though.
it's not a true A to B test since I put a lil baby cam in at the same time, but considering how much fuel I had to add in the midrange of the VE table I'd say it's worth the hassles to get it to run.
I am not really impressed with the coarse thread screws into plastic...and I had to use epoxy to keep it from developing a vacuum leak in the rear. But hey it's cheap and flows pretty good.
Would not consider it for a boosted application though.
#43
Care to comment on just about everything else in the thread? The leaks, flexing of the "front/rear rails" causing leaks? Reason for the ramps in the intake runners where it meets the head?
#44
How much did your Dorman weigh looks like 11 lbs ? What adhesive are you using to seal , name brand ?
#45
the adhesive i used was epoxy, loctite hysol u-09lv. but anything rated for a polyamide (dupont's name for it is nylon---but you'll see PA66 somewhere on any polyamide part) will work.
on locktites website it appears a cyanoacrylic gets the best bond on PA's
scroll to page 36 in this pdf link
https://www.ellsworth.com/globalasse...ic-bonding.pdf
on locktites website it appears a cyanoacrylic gets the best bond on PA's
scroll to page 36 in this pdf link
https://www.ellsworth.com/globalasse...ic-bonding.pdf
#46
the adhesive i used was epoxy, loctite hysol u-09lv. but anything rated for a polyamide (dupont's name for it is nylon---but you'll see PA66 somewhere on any polyamide part) will work.
on locktites website it appears a cyanoacrylic gets the best bond on PA's
scroll to page 36 in this pdf link
https://www.ellsworth.com/globalasse...ic-bonding.pdf
on locktites website it appears a cyanoacrylic gets the best bond on PA's
scroll to page 36 in this pdf link
https://www.ellsworth.com/globalasse...ic-bonding.pdf
#47
615-183
It's tooled that way in order to mold the port and runner shape. The edge is actually positive for flow.
We have a full team of Certified Technicians on staff at our HQ in PA. If you are having trouble with the manifold you can call them for help. 215-997-1800
We have a full team of Certified Technicians on staff at our HQ in PA. If you are having trouble with the manifold you can call them for help. 215-997-1800
#48
Looks like a full-on dyno test is in order to compare an OEM LS6, unmodified Dorman LS6 , and a "modified" (port ramps ground off) Dorman LS6. Let's see if the "ramps" or "edges" as Dorman puts it, actually do it any favors.
Use a mild LS1 or LS6 to recreate a typical situation.
Use a mild LS1 or LS6 to recreate a typical situation.
#49
Flow
[QUOTE=G Atsma;19624477]Looks like a full-on dyno test is in order to compare an OEM LS6, unmodified Dorman LS6 , and a "modified" (port ramps ground off) Dorman LS6. Let's see if the "ramps" or "edges" as Dorman puts it, actually do it any favors.
Use a mild LS1 or LS6 to recreate a typical situation.[/QUO
Its important to note that Dorman develops these Intake Manifolds as OEM replacement parts - not performance. Any modification that customers do after purchase to alter the flow of the manifold is on them.
Use a mild LS1 or LS6 to recreate a typical situation.[/QUO
Its important to note that Dorman develops these Intake Manifolds as OEM replacement parts - not performance. Any modification that customers do after purchase to alter the flow of the manifold is on them.
#50
Manufacturing
Substantially all of our products are manufactured by third parties. Because numerous manufacturers are available to manufacture our products, we are not dependent upon the services of any one manufacturer or any small group of them. No one manufacturer supplies more than 10% of our products. In fiscal 2016, as a percentage of our total dollar volume of purchases, approximately 23% of our products were purchased from various suppliers throughout the United States and the balance of our products were purchased directly from vendors in a variety of foreign countries.
And let's not forget the 16,000 sq. ft. Dorman office in Shanghai, China. Now, this intake should be made in the USA according to the Dorman website but probably not by Dorman.
Last edited by xEtherealx; 05-17-2017 at 02:00 PM.
#51
If a slight modification can reap benefits without compromising the structural integrity of the part, then so be it, even if the warranty is voided.
#52
Are you saying you sealed it to prevent a vacuum leak, or that it actually did develop a leak? It sounds like you just assumed that it would leak and sealed it anyway for insurance but just wanted to clarify.
Thanks for clearing that up. Can you say whether Dorman and Super Auto intakes are manufactured by the same company?
From Dorman's 10-K SEC filing:
Manufacturing
Substantially all of our products are manufactured by third parties. Because numerous manufacturers are available to manufacture our products, we are not dependent upon the services of any one manufacturer or any small group of them. No one manufacturer supplies more than 10% of our products. In fiscal 2016, as a percentage of our total dollar volume of purchases, approximately 23% of our products were purchased from various suppliers throughout the United States and the balance of our products were purchased directly from vendors in a variety of foreign countries.
And let's not forget the 16,000 sq. ft. Dorman office in Shanghai, China. Now, this intake should be made in the USA according to the Dorman website but probably not by Dorman.
Thanks for clearing that up. Can you say whether Dorman and Super Auto intakes are manufactured by the same company?
From Dorman's 10-K SEC filing:
Manufacturing
Substantially all of our products are manufactured by third parties. Because numerous manufacturers are available to manufacture our products, we are not dependent upon the services of any one manufacturer or any small group of them. No one manufacturer supplies more than 10% of our products. In fiscal 2016, as a percentage of our total dollar volume of purchases, approximately 23% of our products were purchased from various suppliers throughout the United States and the balance of our products were purchased directly from vendors in a variety of foreign countries.
And let's not forget the 16,000 sq. ft. Dorman office in Shanghai, China. Now, this intake should be made in the USA according to the Dorman website but probably not by Dorman.
#53
Again….. Dorman and SuperAuto are not the same manifolds. Not the same company. Not manufactured in the same plant. Do not use the same tools or drawings and never have in the history of Dorman since 1918. Dorman, like any many companies sources products all over the globe. This Intake is Made in the USA and always has been since its release. And yes Dorman owns the tooling. Although I can’t recommend - If you prefer the China made one – feel free to purchase the SuperAuto.
#54
nah it was leaking. verifiable in the old school manner with carb cleaner.
I would not use it in a boosted application.
#55
Again….. Dorman and SuperAuto are not the same manifolds. Not the same company. Not manufactured in the same plant. Do not use the same tools or drawings and never have in the history of Dorman since 1918. Dorman, like any many companies sources products all over the globe. This Intake is Made in the USA and always has been since its release. And yes Dorman owns the tooling. Although I can’t recommend - If you prefer the China made one – feel free to purchase the SuperAuto.
#56
Now what I think dorman did here was add this ramp to the port to add a restriction so it doesn't fully copy the fast 90 base. Dorman owns the rights to the fast base mold but probably can't copy it fully. Not to mention degrading its performance makes it a stock replacement more than a performance replacement. So dorman makes a large plenum long runner intake that shares nothing with a stock truck intake, looks identical almost externally to a fast truck intake and uses a copy of the fast base but adds the ramp restriction to the base. Now for reasons stated before dorman did this to cover there *** per say but more importantly if you fix what they did on purpose you could have a solid intake. Remove the performance robbing second swirl ramp and see what you get. I'm sure most of us will be surprised.
Dorman, nice try!
I will be gluing mine together like truck Doug and then boosting it to 10psi over my stock intake. However I won't be getting it Dyno tested unless someone wants to pay for it. Otherwise I'm happy to share my logs and injector duty cycles with the forum after I do the swap. You can calculate hp via rpm, cuin, fuel flow etc.
Last edited by customblackbird; 05-21-2017 at 09:01 PM.
#57
If that method is accurate (I suspect it is) then why does anyone Dyno their LS vehicle? I get that RWHP will be different but horsepower is all relative anyway, so I think that rwhp is unimportant when comparing performance.
#58
Maybe you could shed some light on this intake and leaking at idle. I purchased this intake for a slight performance over the stock 99 truck intake. Myself and another member installed the same time on different motors his leaked from just torquing it down to the heads at the front and back where the 2 halves come together. Myself I saw some slight separation in these areas. I removed the intake and put the stocker back on but he separated the 2 haves and plastic permanent epoxied the 2 halfs together to get rid of his vacuum leaks. I have a boosted motor so I know I couldn't run it without glueing the sides together.
I got my real dorman like 6 months ago from summit racing.
care to comment?
I got my real dorman like 6 months ago from summit racing.
care to comment?
My dorman intake did the same thing when torqued down, evident from blow by/pcv oils seeping from between the intake halves. No "apparent" vac leaks.
#59
My Dorman LS2 intake looked to be fairly good quality. Also pretty much looks like stock for the sleeper look and they are a PA based company who makes stuff in the USA. Not too shabby for the price.