but lilbucu you are not running the original motor eh! peekaboo!

By lilbucu (128.208.49.56) on Wednesday, November 10, 2004 - 03:53 pm:

here it is on the car.

http://students.washington.edu/lilbucu/Project_RadMobile/Part_09/DSC01603.JPG

By lilbucu (128.208.49.56) on Wednesday, November 10, 2004 - 03:50 pm:

here it is on the car.

http://students.washington.edu/lilbucu/Project_RadMobile/Part_09/DSC01603.JPG

By lilbucu (128.208.49.56) on Wednesday, November 10, 2004 - 03:47 pm:

heh despite what don has said this is what i'm running:
http://students.washington.edu/lilbucu/Project_RadMobile/Part_09/DSC01601.JPG
http://students.washington.edu/lilbucu/Project_RadMobile/Part_06/DSC01400.JPG

;)

By Jarcaf (Jarcaf) (207.55.238.216) on Wednesday, November 10, 2004 - 02:55 pm:

Yeah, I talked to Cory a few months ago. He's a cool guy and didn't really have a problem staying after-hours to help me out w/ my "racing application-only no-cat setup". The guys down at Mike's are nice but I think they're over-charging and it definitely felt like Cory knew what he was doing. I've got several friends at the High Scholl that have had jobs done at either shop, but either side swears to their own. I think I'll stick w/ Cory's though. Thanks,
-Jarvis

By Don (199.2.139.232) on Wednesday, November 10, 2004 - 05:54 am:

Allen Specailties welded up the the system in ubends its not hard and they did a great job. Ah the hood pin now they have cables attached. Since your in Ashland, Go talk to Cory at Ashland muffler. He is not the one who did my exhaust but he does great work. If that not to your liking Allen and they can do an exhaust similar to what was done on mine they do it all the time last week they did one for a very high dollar Chevy nice nice work. Ya swing it by If I'm busy I will tell you but somedays I can take a look.

By Jarcaf (Jarcaf) (207.55.238.216) on Tuesday, November 09, 2004 - 11:59 pm:

Yeah, I live in Ashland. You probably don't remember me, but I met you briefly out at the track early this season, before I had my EK project running. If I recall correctly, you had mysteriously misplaced a hoodpin and I tried to help you find it, w/ no success. I'll have to swing the sedan by your shop someday, if you're not busy...tell me what you think. Anyway, did those friends of your's have a mandrel bender or did they weld in pre-fab mandrel joints? It'll have to be my next expense when a new paycheck comes in.
-Jarvis

By Don (199.2.139.164) on Tuesday, November 09, 2004 - 07:48 pm:

In the valley? Are you local? I got mine made up from friends. One owns a muffler business, I would think it would be under $400 from the header back.

By Jarcaf (Jarcaf) (207.55.238.216) on Tuesday, November 09, 2004 - 05:03 pm:

Hey Don, Do you know of anyone in the valley that does mandrel exhaust systems? How much do you think they'd be asking? I'm getting quotes for around $300 on standard bends.
-Jarvis

By Chaffneue (Chaffneue) (66.183.190.188) on Tuesday, November 09, 2004 - 12:47 am:

Where the hell is the popcorn?

-Richard

By lilbucu (24.16.243.28) on Monday, November 08, 2004 - 07:28 pm:

HAHHAHA and don is not just "some guy on the internet".

By John S. (152.163.100.199) on Saturday, November 06, 2004 - 07:50 am:

I've posted this once , and I'll post it again. If you take the time to look at the exhaust coming out of the rear of a Acura RSX...200 factory horsepower...you will see that it is no larger than a metric equivalent of 2". Now do you think that if there was any advantage to using a larger exhaust to gain a couple more horsepower that Honda would fail use it? Too large an exhaust pipe is like valves that are too large, or hogging out your cylinder head in an amatuer "port" job. AS Don and many of us KNOW there are many variables involved in all of this and many "systems" inter-react and affect one another. You have to do your homework in advance, or you will be finding out the hard way what others already know.(many of whom found out the hard way themselves). By the way I agree 1 3/4" is plenty big enough for all but the hottest of 1200,CVCC motors.

By joe (219.88.63.120) on Friday, November 05, 2004 - 10:17 pm:

don calling somone an idiot for listening to people with a greater knowledge about exhausts than what i knew is hardly idiotic-but hey if you just want to put people down over sharing information that i believed to be correct go hard -i stand corrected

By Tor (63.146.72.67) on Friday, November 05, 2004 - 08:23 am:

A few years ago I was building a 1969 Roadrunner. It had a built 383 (440 cam, crank, intake, exhaust, etc…. The guy I went to for advice, machine work, parts and such was a drag racer by the name of Larry Morgan. He builds and sells winning top fuel and pro stock dragsters to professional teams as well as competes competitively in pro stock himself. I believe his best time in the quarter was mid 6 seconds.

His advice to me with a big block V8 pushing around 400HP was 2” pipes, no bigger. I find it very hard to believe that a 4 cylinder would need anything larger then that.

By farenheight101 (24.69.255.203) on Friday, November 05, 2004 - 08:17 am:

hey now...you guys...

By Don (199.2.139.189) on Friday, November 05, 2004 - 05:25 am:

Ok Joe
Now its a "trained mechanic"
Sorry but your an idiot. As for my qualifications... if you read the archives you will find out my training, qualifications, my car and probably alot of other stuff you can pass on to your "Trained - Lotus- Racing mechanic". FIY Lotus aren't just limited to your mechanic in NZ and while they are nice cars most were FORD powered so putting on airs saying that someone works on Lotus cars it pretty ignortant because what your saying is they work on Fords with a different chassis. This was a post about exhaust size and I'm pretty sure its has become something only fit for dumb asses so like I said before you are free to use what ever size you want and it wont matter because you dont race against any other cars.

By joe evileb2 (210.55.144.228) on Friday, November 05, 2004 - 01:04 am:

no your assumtion is wrong- it isnt mattew my name is joe but you were close same workshop and there are two people that work there ken=lotus mechanic and andrew=honda mechanic -my car is far more worked than mats he got his mild cam from me and mine is a bit more wild than mild.
and sorry i think a trained mechanic will know more than some "guy" on the internet...
and im still interested to see your cars specs cause because the way you are going on you must have one of the fastest around...have you got any times for it 0-100 kph or 1/4 times?...

By Don (199.2.139.173) on Thursday, November 04, 2004 - 02:45 pm:

It this Mathew? If so try using you real name.
An eb2 with a set of dells, mild cam and a header is far from pumped. There is no way your going to use that 2 1/4 pipe volume. The thing is your young so keep learning and maybe someday you will understand what I am trying to tell you. But dont ask my opinion, do it you way instead and then tell me that your "Lotus = Race mechanic" said so... next time just ask him then save us all a bunch of writing OK.

By evileb2 (219.88.59.212) on Thursday, November 04, 2004 - 12:47 pm:

hahaha hillbilly very funny the car has been set up just as my daily driver which considering the mod list goes like this :dellortto dhlb35's,with redline airfilters,lumpy cam,en pulleys,4-1 extractors,accord brake booster, oversized brake shoes,5 spd city gearbox new clutch-flywheel,electric fuel pump and hi-flow filter.crx recaros,momo steeering wheel,sony explod stereo, this is just a daily driver not full out race car like your own , if i had been a "hillbilly" i would have gone yea haw im gona get me one of them' shiny ass 5" tips wita 3" and a 1/2 straight through like on dem gtr things! and gee is it really a bad thing to have a lotus mechanic tune my car- im going go with no!

By Don (199.2.139.241) on Thursday, November 04, 2004 - 05:54 am:

It amazes me that some "hillbilly" can have a race car in the back of there shop and probably finishes last every race they go to and people that dont want to spend or brain power the time reasarching what there engine really needs will just have mods done to their car blindly...not having a clue what it takes to realy make a engine run because they had a "race mechanic" do thier car. If it works for you thats fine, but some of us really do compete against other cars not just the legends in our own mind.

By Don (199.2.139.241) on Thursday, November 04, 2004 - 05:26 am:

Evil you are beyond help... Do what you wish.

By evileb2 (219.88.59.212) on Thursday, November 04, 2004 - 05:01 am:

well the exhaust is on it is running 4-1 extractors and 2" 1/4 to the first resonator then 2" to muffler and it has noticably improved performance. don the guy who made my exhaust makes many of the exhausts for race cars in nz so i think he knows what hes is talking about and this size is only for very worked engines...like mine. and just out interest don what have you done to yours?

By Don (199.2.139.237) on Wednesday, November 03, 2004 - 12:18 am:

http://www.theracechannels.com/photos/03anamohpn-47.jpg
Just a photo of Malleys HP National Championship Civic (Now GT5).... note exhaust size

By Colza (Colza) (219.88.32.174) on Sunday, October 17, 2004 - 02:41 am:

If you are running boost however, you want the biggest you can get =D

By Kurt (205.250.75.226) on Saturday, October 16, 2004 - 02:50 pm:

I run 2" with my EL set up which must work out to 1 3/4" in the bends as its not mandrel. I was also told to go no bigger than that. My flex pipe actually went on me just beyond my header and I beleive I lost power from that as well. It seems that most people now a days want exhausts around 3" in diamter....must be these kids with those rediculous oversized mufflers and tips.

- Kurt

By Bryan (66.245.31.123) on Friday, October 15, 2004 - 09:11 am:

You all better listen to Don.....his little civic runs extremely well. He has done a lot in his time and I am sure he has made mistakes. My Dad always said learn from the mistakes of others, as you won't live long enough to make them all your self!

As I said before, a 2" standard bent exhaust is plenty for a modified engine. As many bends as there are in a civic exhaust, it gives restriction at the bends and would probably be similar to a mandrel bent 1 3/4" system.

I remember years ago........The muffler pipe broke right after the factory bolt together flange in the rear. I lost so much power. The engine was not totally stock at that time either. It had a shaved head, ports and combustion chambers reworked, multi angle valve job, and high performance carb. All of this breathed through stock exhaust. I installed a complete new factory exhaust and the "power" came back. I don't remember the factory size of the pipe, but it is small.

Now I have given .04......

By Don (199.2.139.216) on Thursday, October 14, 2004 - 01:03 pm:

Personaly I think 2" is too big for any 1.2 1.3 that is street drivable but the only way to tell for your specific aplication is to build up two systems and get on a chassis dyno. But a 2 1/4" X 2 ea. exhaust will feed 400 hp V8 easy.... I would say you might be at 90Hp with the set up you have. I don't think a properly designed and built 1 3/4" will hurt your engine at all.

By farenheight101 (24.69.255.203) on Thursday, October 14, 2004 - 11:47 am:

I'm gonna have 2" on my 1300. People have told me that that is the limit for this size on engine. My S&S merge collector is 4x1 3/8" in and 2" out, then to 2" straight pipe and mandreal bends, then at the end, a 2"-2 3/8" expander to fit my Apexi N1 Muffler.

What do ya think Don? I think all my power will be in the top end. I'm also running a street-wild cam with dual dellorto's so I figgure this size is needed.

By Tor (63.146.72.65) on Thursday, October 14, 2004 - 11:37 am:

"As a general rule, you can enlarge the pipe diameter of your OEM exhaust system by 1/4 to 1/2-inch to increase your horsepower. However, any additional increase in pipe diameter is likely to decrease your performance; specifically, low end torque."

http://www.magnaflow.com/07techtips/faq/question10.htm

By Tor (63.146.72.65) on Thursday, October 14, 2004 - 11:31 am:

2 1/4" to 2 1/2" is recomended for a hotrod small block V8. I would imagine a 1200 or 1500 even with performance enhancements would be smaller. Probably no more than 2"

There is a good article on this at:
http://www.streetrodderweb.com/tech/0204sr_exhaust/

By Don (199.2.139.198) on Thursday, October 14, 2004 - 08:32 am:

Nope your exhaust is too big. Race team mechanic! blah blah blah.... You have to understand the reasons why you do mods not just monkey see monkey do, otherwise you will be behind the people who think most of the time.

By evileb2 (210.55.144.249) on Wednesday, October 13, 2004 - 05:33 pm:

breathing to many fumes, what a joke- the source for the size was from a mechanic that worked on the works race team and also from a performance exhaust workshop! and i was telling the size for a performance application hopfully your talking about a standard system. im getting this system made up on the 26th of oct for my mine

By Bryan (66.245.8.201) on Monday, October 11, 2004 - 02:03 pm:

Hey guys.......just my .02

If you run 2" tubing and have it bent with a standard bender, then it will be about 1 3/4" in the middle of the bend where the bender crushes it.

So obviously mandrel bent tubing is better......

By Don (199.2.139.212) on Sunday, October 10, 2004 - 05:49 am:

The shiny side sayed up barely so its fine. He had a gearbox cut by someone thats basicly the best part on the car. Everthing else could be made.

By shreck (24.112.121.191) on Saturday, October 09, 2004 - 10:22 pm:

5ft!, hope things turned out ok.

I dont think he had much left but I will check anyway, I tried to get the headers but they were gone already and I saw him a couple of months ago he had even sold his roll cage. Jeff has a younge family and business to take care of and does not seem to have time for this hobby.

By Don (199.2.139.182) on Saturday, October 09, 2004 - 09:45 pm:

Oh Oh if he has any more parts let me know! Or have him e-mail me.
If he was running dual exhaust it was because who ever built the car before him didn't know any better The car had some nice parts but there was some cheesy things too. I know all about that rolling thing... Last weekend I got the inside tires off the pavement 2 ft but thats better than 5ft I did earlier this year.

By shreck (66.185.85.79) on Saturday, October 09, 2004 - 08:52 pm:

Thanks Don

I was wondering cause I did not think Jeff had anything bigger than 2" if it was that. I am wondering why he would be running dual exhaust for racing, any idea. BTW Jeff sold me his motor after he rolled and trashed his car at the track.

By Don (199.2.139.202) on Saturday, October 09, 2004 - 06:54 am:

Hey Shreck
I forgot all my info to get on the other site. Those guys that are telling you to run a 2-1/4 exhaust are breathing too many fumes. We are not dealing with 200 hp here. Yes you will loose performance runing that big of pipe. Notice the pictures posted of the 2 1/4 system with the crush bends? I run a 1 3/4 MANDREL BENT system the type of bends in an exhaust is covered on this board... maybe in the archives?