I agree, seam weld everything if u intend to bash it around with 250hp. Fit
a full 6 cage and a strut brace. That covers most of your strength probs.
I just helped seam weld the rear end of my bosses 1600 rally car cause it
was starting to crack, and its only got a 150hp L18, but it does get bashed
around a fair bit.
As Richard said, it depends on what your going to use it for.
Scott
-----Original Message-----
From: Richard Clough <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Monday, 23 October, 2000 22:08
Subject: Re: Strengthening the 1600 chassis.
>The degree of strengthening the chassis really depends on what you intend
to
>do with the car and its horsepower.
>
>If you simply put in the 250HP engine with a brake upgrade you may not need
>a lot of additional strength apart from the front struts area, to cope with
>harder stops. The rear end will be simply spinning a lot and looking
>impressive as rubber goes up in smoke. (Refer to the Ozdate website for a
>demo)
>
>When you want to actually get the car moving forward with the rear end
>sticking (5.1 LSD, big rubber, stiff suspension) then the drama really
>starts. Body flex will crack the car at all the weakest points in a short
>time. You will need to strengthen every where, and even that wont be
>enough, unless you dont "pop" the clutch - and who would never do that,
with
>250HP under the right boot? There are some good emails on where to seam
>weld, in the archives on the site, check these out.
>
>A roll cage is a good idea but it needs to be rigidly mounted to the body
in
>as many places as possible, including through the firewall to the front
>strut towers and at the A and B pillars, for ultimate rigidity. A half
cage
>doesnt add much (any?) ridgity but does add some safety.
>
>If you are going to rally your car, go for the full cage up front for
safety
>and strength. Seam/stitch weld everything, and may be you will get 5
>seasons out of the shell excluding "off roads". A 1600 shell with the full
>treatment above and quality gas suspension feels bullet proof, even on
>really rough roads.
>
>----- Original Message -----
>From: "David Andrews" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Monday, 23 October 2000 21:40 PM
>Subject: Strengthening the 1600 chassis.
>
>
>> G'day All,
>>
>> Well have spoken to an imported who is on the lookout for a front-cut S15
>> for me. Might be waiting for a while :). Now I'm doing the research for
>the
>> chassis strengthening the car will require.
>> Heres is what I am contemplating at the moment:
>>
>> - Seam welded front-end
>> - Strut brace (have only seen pictures of a NISMO one in USA anyone got
>> into on these?)
>> - rear 1/2 chrome moly roll cage (4/6 point?)
>>
>> Just after everyones opinion on this. Will it be enough to take the 250hp
>> engine for the next 5 years or do I need to do more?
>> As you can tell I know bugger all about roll cages but I hope you get the
>> drift.
>>
>> Also on the NZ nissan page they mention the S15 has a brace under the
>> gearbox. Got a picture of it at:
>>
>> http://www.nissan.co.nz/200sx/200sx3.html
>>
>> Looks almost like a mid-section anti-sway bar attached to either side of
>> the gearbox tunnel? Comments?
>> BTW. You've gotta see Geordies 15-second funrun.mpg
>> MAD!! MORE MORE MORE MORE MORE!!!
>> Regards,
>>
>> Dave
>>
>>
>
>
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