HELP: The SSI's I bought don't fit my car!

This is really good info. Thanks all.

Just a few things I don't understand:

1. Why bother with collars when they have a minor distance around them out to the heads? Exhaust gas will come past the collar down to the gasket?

2. My mechanic believes that the gaskets will wear prematurely with this setup? What are people's experience with that?

3. I'm so curious: Why not exploit potential and make 1.5 inch inner diameter HE's? I know you say "bigger is not always better", but if people fit 3.4 or 3.5 cylinders/pistons, a MAF kit, enlarged throttle body etc. etc. it may add up some potential in the end?


Before my stock exhaust was removed (1.5 inch inner diameter, I might add) the car was measured on a rolling road. I will have the car tested on the same rolling road after installing the new exhaust. Sadly it doesn't measure torque, but only HP. It seems that my gains will be torque and not HP...?

[Brad Roberts]

I do agree with Wayne that just about every other vendor has incorrect info. I feel bad for Wayne..because they where chosen first to get the info straight. I think it will pay off in the long run (with sales) We have given up on some of the other "Catalog" vendors and getting their info straight. Its a long and tedious process trying to keep everything straight with 750 some odd vendors that sell our product worldwide.

B

[Brad Roberts]

Mikkel,

Torque moves your car forward.. the rolling road you use will measure the amount of time it takes for you to accelerate a given weight (the rollers). With more torque you will accelerate it faster which will give you more HP in certain parts of the RPM range during the pull. The SSI's only effect the very top end around 5800-6200 (I dont have the actual number in front of me).

1. Sealing. The different "inserts" (as we call them) create a better seal depending on what heads you have (3.0/3.2).

2. The gaskets will not wear prematurely (does this guy sell Danks products ?? ??

3. Nobody said we wont be making a larger tube exhaust header. We see the demand. We also know how "Bigger is Better" sells. I promise something is in the works.. but it wont be available for at least another year (lots and lots of testing) SSI doesnt subscribe to the theory of getting product to market as fast as possible. Instead.. all tooling and products are perfected prior to manufacturing (granted.. not many new products, but several are in the works)

B

[Brad Roberts]

Oh.. Mikkel,

I wanted to apologize for not getting back to you sooner. I was out running around all day yesterday picking up test vehicles and John didnt know about the issue until late.

B

Wayne

I just had a look at the changes you've done to the online catalog. Much much better! Had it only been like that when I ordered mine Good job.

Brad Roberts


Thanks.


So I guess I shouldn't worry anymore and just slap on the HE's along with the Dansk muffler - which BTW I bought through my mechanic - and head for the rolling road. I think he's just taken by surprise because he expected 1.5 inch inner diameter (so did I actually).


I know all about those who boast about EXTRA HP that they bought for $$$. Often it's only there above 5000-6000 rpms and in real world traffic that's not really worth anything (but they can say that their car has X00 HP which is important to impress others). Your comments on the importance of torque seem quite realistic. Power between 2000 and 5000 rpms is much more noticeable on a street car.

So SSI's don't really produce extra HP, but extra torque instead?

[Brad Roberts]

We use 1.5 inch tube..but it has a 16 thousandths thick "wall".

Measure the insides of your old ones and report back with what you find (when you get a chance).

You will be very happy with the new sound and the slight improvement in the mid-range. Your going to be just fine.

Something we laugh about at lunch around here:

"Lets build 1 5/8 heat exchangers and build a collector that slows down the flow to gain some of the torque back that is lost in the mid-range"

This would allow people to say "I have 1 5/8 headers" and allow us to fill the "Bigger is Better" orders that we currently miss out on.

B

[jabb]

can you run a CAT with the SSi's on an 84 ??
What do you have to do to make this work ??

[dickster]

Did you test with a straight pipe and the silencer ?

brad,

no, with cat. and std muffler, euro premuff with std muffler, and euro premuff with two out sport muff.

heres the link

at last dyno figures for 1986 3.2 with dansk premuffler/sport 2 out muffler

it seemed more eager to rev when i took the cat. off, but if i'm honest i can't feel the extra 12hp that we dynoed.

gonna need another 50 before that happens.......

jabb


No. You can't run SSI's and have a cat at the same time.

Originally posted by Brad Roberts

Measure the insides of your old ones and report back with what you find (when you get a chance).

You will be very happy with the new sound and the slight improvement in the mid-range. Your going to be just fine.

- I will. It'll take some time though. (Quite far from mechanic)

- I hope so

[Gordo2]

I'm going to snag those close up picutres and post them back on the board next time someone asks for "Eye Candy".

Sound engineering and quality workmanship can be a beautiful thing. I need a set!


Gordo

[Matt Holcomb]

Mikkel,

My late mechanic told me that SSIs give you a bit more torque, even if you're putting them on a 3.2.


Matt Holcomb
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[VenezianBlau 87]

Hello all:

I'm happy with my new SSIs bought through Pelican and installed last weekend. My motor is the stock 3.2. Tube collars bevelled on the inside just like the earlier pics. A perfect fit. I installed new exhaust port metal gaskets, studs (and nuts of course) while I was at it. Two new oil lines went in with no problems or subsequent leaks. I think I'll lose the Dansk 2-in 1-out OEM type muffler for the GHL 3-inch 1-out that is currently enroute from Pelican.

I've noticed that at any given speed, I'm running less RPMs. I've not needed to upshift on roads I would normally drive in 5th and slower roads I would take in 4th I now leave in 3rd. Sounds like an earler 911 with the Dansk. Sound really comes alive at 4,000. Different sound from the Dansk sport 1-in 1-out I had put on earlier.

I need to find some way to hook up the two open heat exchanger holes which pipe up to the motor based blower. Oddly, my two floorboard heater motors stopped working. I don't remember disconnecting the motor based blower, but it was a beer-assisted project.

If anyone knows of a way to hook up the two aft heat exchanger ducts please let me know. I read on here that one guy clamped beer cans on them to at least seal out the elements. Pretty funny!

Cheers,
Bob Sauerteig

[dickster]

mikkel,

it would be good to see yours dynoed before and after - esp. since you dont have a cat.

Richard

I did have it on a rolling road with the stock exhaust just before it was taken off the car. I will have it measured again that same place after the SSI's have been installed.

My problem is that I think something went wrong in the "before" test. The result came out at 171KW at the rear wheels which is the same as 232,56HP. So the engine should have 185KW which is 251,6HP!!!! I can't believe this.

I suggested that perhaps the rolling road constantly measured too much - I mean 20 HP for free is too good to be true - but was told that maximum error margin was about 10HP....?

All that has been done to my engine is an adjustment and a Powerhaus High Flow intake. I'm really nervous for the second run because of this first result.

[dickster]

mikkel,

i would forget that. the important thing is to have it dynoed on the same dyno.

You're right.

I'll try to pick a day with similar weather conditions.

[Brad Roberts]

Jabb,

We have several customers who run a cat on their SSI's to pass smog. They cut one end off of their factory cat and use a Bursch style header to feed the "cat" then place a small muffler after it. Basically its for Smog tests. They yank it off when they get home.

B

[Brad Roberts]

More "Eye Candy" for you...






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