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Thread: Threoly header and exhaust pipe size Reply to Thread
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Topic Review (Newest First)
05-31-2012 12:51 PM
Boxcar I dobt it....Boxcar...
05-30-2012 06:42 AM
mobile3 Thanks all guys for replying

Suzuki engines here are hard to find and expensive
But I take G16A engine because it is easy to swap
and because it is my first swap,i want to take things easy

For Dyno:
I would to see G16A dyno sheet. I tried once to find but no luck

Can G16A do burnout in 2nd gear with these mods:
Electric Weber
Threoly header
ISKY POWER CAM
2" or 2.25" exhaust pipe
electric fan (if it does any)
a little reduction like remove spare and rear seat
stock gear and tires
05-29-2012 01:00 AM
Boxcar While bthe 8 and 16 valve engines are a definite upgrade over the 1300, I have seen very few that don't develop block cracks at an early stage. The crank cases on these engines are a bit to week for my tast....We are using the L20B Datsun engines as upgrades. Iron block , 110 hp stock, and just plain bullet proof......Boxcar...
05-23-2012 11:55 AM
caseyjones955 When I did work with VW 8 valves torque was damn nice for the size engine but getting top end required to much modification and still couldn't blaze past rows of RVs and Harleys the way a 16v could (especially in similar state of tune). But I digress, I realize I'm not in VWland anymore All the gurus have told me that the Suzuki 16v is superior to the 8v in every respect. This is consistent with my opinion based on test drives before purchasing. The 8v is an easier install but the advantages end there.

That being said I'm not entirely convinced an 8v wouldn't do the job you want it to do. If cost is an issue AND you already have access to an 8v than it seems like a good choice. I'm going to x2 what Boxcar said about importance of torque. If I were doing what your doing I would probably save the $$ and use the 8v. There is a real limit to how fast I want to go in a short wheel base, leaf spring vehicle on inconsistent terrain. I had mine up to 75 on smooth pavement before I took it out of service again and even that was a pucker factor of about 3.

Tony
05-23-2012 06:38 AM
Rhinoman
Quote:
Originally Posted by caseyjones955 View Post
I am somewhat new to Suzuki but in general and my experience with VW and other makes has shown me that the 8v engines are better for low end grunt where the 16v engines are a little softer down low but stronger from mid range on up. It comes down to the charge velocity as it enters the cylinder through a single instake valve vs freer flowing 2 valves. The Suzuki 16v are EFI and are more detailed to install in a Samurai.
Tony
8V and 16V engines can't be compared directly it depends on other factors such as cam design and valve sizes, also a 4-valve engine has a more efficient combustion chamber and can therefore run higher compression.
Suzuki's 1.6 16V is a very sofly tuned engined, it makes the same power and torque as the 8V up to around 3500rpm. The torque on the 8V starts to drop off over 3500 at a much faster rate than the 16V. I did have a dyno comparison but it was lost in a hard drive crash a few years back.
05-23-2012 04:58 AM
mobile3
Quote:
Originally Posted by Boxcar View Post
The 8 valve 1600 will make descent amounts of torque and better spool over a 1300 in stock format. A nice mid range cam, 2" exhaust system, the Corolla 1600 carb Or the my side 40mm conversion and proper tire size for your gearing, and you should be good to go.
Don't overlook the little things like, plug wires ( I run 9mm wires ), Good plugs,
Valve timing, Ignition timing, etc.
[/IMG]
Wow nice info

how much you expect from 8 valve 1600 engine with these mods?
05-23-2012 04:12 AM
mobile3 I appreciate Boxcar your reply

I disappoint from Threoly header. I test Threoly header and stock header without exhaust pipe in street out of my city. i know.. i know ... crazy

Two tests:
A. from 30K/H to 80K/H
B. from 60K/H to 100K/H

The Result: by average = no one win

So, my test to figure out where my power band and where to shift it for better result in desert (not racing but need to accelerate as u can and climb the sand)

But because I don't see any difference, I will go back to stock header and exhaust
And install electric Weber. Then I will try again with Threoly header

If I understand things wrong or you have difference result, please clear that to me.
05-22-2012 11:03 AM
Boxcar You may be confused. Low end torque is as necessary in the desert as it is in the woods.
The 8 valve 1600 will make descent amounts of torque and better spool over a 1300 in stock format. A nice mid range cam, 2" exhaust system, the Corolla 1600 carb Or the my side 40mm conversion and proper tire size for your gearing, and you should be good to go.
Don't overlook the little things like, plug wires ( I run 9mm wires ), Good plugs,
Valve timing, Ignition timing, etc.
We run my Sammy in the woods mostly, but take a trip every year to the Alvord desert
and to China hat. Trust me , without the bottom end that my mill produces. I'd be stuck out there still.
While the Samurai is a very capable off road rig. It is by no means a desert racer.
Running wide open out across the desert with Leif spring suspension will destroy your
zuke and your back......If that is your intension. I'd be researching 4 links and long travel suspension systems, as well as some pretty substantial axle upgrades........Boxcar...
05-22-2012 01:53 AM
mobile3 Because I don't needed at all except when I am in the road to desert
05-21-2012 05:45 PM
Boxcar Why would you want to destroy the low end torque curv on an off road only rig???????
...Boxcar....
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