Aurora 4.0l / Izuzu 5 speed swap into 88 coupe (Page 16/102)
Rickady88GT DEC 18, 02:26 PM
I tryed every thing I cold think of that would alow me to use the stock cat (smog laws) and have some type of muffler. Well the stock location was out for the muff because that is where the cat went. So I looked for realy small muffs, one for each side. But that was ruled out for there was not enough room. The pipe could not be routed throu the frame and clear the susp and brake lines. In the system I used the pipe will be VERRY hot as the cat heats the gasses up to burn anything that did not burn in the engine. After seeing how close the very hot pipes were going to be to the brake lines, tires and plastic bumper I decided to not do the small mufflers. Mine is an 88 and just did not have the room for mufflers that size I started the engine with no system on it at all and it was not loud, so the cat took down the sound even more. I just ran the pipe into a Y after the cat to go to duel res tips. I realy like the sound and is not loud till you realy rev it up. I did use some 3" pipe. I also used 2.5". But all of the 3" pipe I used are exhaust doughnuts. I chose to use 3" for the VERY tight turns for lower restriction and ran 2.5" for the majority of the system. BTW my cat is 3" in and 3" out so I saw no reason to think it would be detramental to use some 3" pipe. I also used 2.5" exhaust doughnuts too. They alow me to make turns so tight that it would be imposable to bend a pipe that far. They realy come in handy.
If I thaught the car was to loud I had a backup plan to customize a set of small muffs to fit. But that would have cost more money so I did not want to go that way.
cptsnoopy DEC 18, 06:15 PM

quote
Originally posted by Rickady88GT:
all of the 3" pipe I used are exhaust doughnuts. I chose to use 3" for the VERY tight turns for lower restriction and ran 2.5" for the majority of the system. I also used 2.5" exhaust doughnuts too. They alow me to make turns so tight that it would be imposable to bend a pipe that far. They realy come in handy.
If I thought the car was to loud I had a backup plan to customize a set of small muffs to fit. But that would have cost more money so I did not want to go that way.

Rickady88GT,

I always thought that exhaust doughnuts were the packing material in the flared joint from the manifolds to the pipe. I am wondering where do I look to see the doughnuts you're using on your system. I saw the picture of yours and the bends where the pipes split to go left and right are almost 90 degrees with little radius. is that from a cut up exhaust doughnut? It sounds like your system is working pretty well. I thought I would have to go with no muffs until I saw the ones I am using on my brothers sandrail. They are straight through so I don't know if they will lower the sound or not. I guess I will use a bell fitting or something temporary until I know they are worth having there.
cptsnoopy DEC 18, 06:22 PM
Rickady88GT,

I read your post about using the 90's corvette surge tank for the cooling system. Did you buy yours new or get one used? just wondering what to expect to pay for one. Also, when you use dexcool, do you need to put pellets in the system?
thanks

[This message has been edited by cptsnoopy (edited 12-18-2004).]

ryan.hess DEC 18, 10:41 PM

quote
Originally posted by cptsnoopy:
Also, when you use dexcool, do you need to put pellets in the system?
thanks

YES! It's compatible with all coolants. Very important you get that stuff in there, especially in case the last owner didn't.
cptsnoopy DEC 18, 10:42 PM
Thanks Ryan
cptsnoopy DEC 28, 02:52 AM
Well, I barely avoided disaster! I caught something on fire in the garage while grinding down some welds on the car... If I did not have a fire extinguisher handy it would have been the end of the house and the car... as it is I threw out all of the charred stuff and the only things on the car that were hurt is the drivers door inside and outside panels. they were off the car and near where the fire started. Luckily the garage did not get any damage other than the stink of melting plastic... So instead of getting anything done on the car today I spent the whole day emptying out the garage and cleaning up the mess... well, it could have been worse... good lesson, keep the fire extinguisher handy!

door panel, may be able to save...


used up fire fighting tool...


heat treated golf clubs... The golf bag is a goner

[This message has been edited by cptsnoopy (edited 05-11-2012).]

GSXRBOBBY DEC 28, 12:56 PM
I take it you didn't ask for a new set of clubs for Christmas? So other then the door panel did you hurt anything else on the car?
P.S. don't tell your wife, she may try to stop you! haha

------------------
Bobby from NW Indiana
93 Northstar and 5 speed Getrag
219customs@verizon.net
My build thread

cptsnoopy DEC 28, 05:20 PM
the outside door panel looks like it just got smoke damage and can be refinished. the inside door panel was on fire and cannot be saved... other than that (and the golf bag meltdown) no other car parts were damaged. the garage smells a bit but should be fine in a few weeks. now that all the combustable materials are in the trash I should be ok to work again. that and I just got back from Home Depot with new fire extinguisher My wife was alarmed but has not stopped me yet... I will try to post some pics tonight of the strut tower that I am working on.
GSXRBOBBY DEC 28, 06:38 PM
Your going to be in trouble, she is going to yell at you! Glad to hear things are no worse.

------------------
Bobby from NW Indiana
93 Northstar and 5 speed Getrag
219customs@verizon.net
My build thread

cptsnoopy DEC 28, 10:23 PM
she may yell at me but I still have a present for her.

Here is what I was working on when things got hot... I was grinding down some welds for the strut tower mod. The top half of the hole has a piece of 1/8th inch steel across it and the bottom half has 1/16th inch steel. I just hooked up some gas to my welder and am trying the mig setup. I like the clean welds but I still need to get it figured out. as you will see in the first picture the welds are pretty fugly. at least they are penetrating. on the welds that face the engine bay I cheated and ground them down. I did not see any reason to do that on the wheel side.



[This message has been edited by cptsnoopy (edited 05-11-2012).]