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post #1 of 12 (permalink) Old 03-15-03, 02:37 PM Thread Starter
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GTHO, Superchargers and THE BULGE

Finally just got myself registered, so excuse me if this is old news, but a few pieces of a certain puzzle have been coming together for me.

I read somewhere (Motor last month?) that "train spotters" will note that there has been a change in the profile of the BA bonnet bulge since the pre-launch cars. The bulge now goes right down to the front bonnet line, and is reportedly "65mm higher" than previous.

Hard to check when you consider that all the XR8 ads seem to have the bulge right on the staple lines in the double page spread, but then they ran the ute TV ad again this week and the difference is completely obvious.

So then you get the GT story that says that the chief engine guys say that the GT engine is "already very, very efficient", which mean that there is no more power there in normally aspirated form.

The theory then is that the new bulge can only be because of the extra space needed to fit in teh blower!!

Early times for the GT of course suggest that this is the least that FPV will need to do to claim HO status......

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post #2 of 12 (permalink) Old 03-15-03, 04:25 PM
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welcome to FF 240 !!

The bulge was lengthened to help with the manufacturing and according to ford to make it look better (I don't agree..but everyone is entitled to their opinion). If you look at pics of the original bulge and add 65mm then you will be about 3 inches shy of the roof line !!
There are plenty more ways to mount a blower than on the top .. in fact mounting a blower on the top of a V configuration is becoming rarer .. most CAPA and such blowers are mounted on the front.. There is also bulk room UNDER the manifold that could be used (dunno about heat transfer though) as well.

I wouldn't write off the Boss motors in NA form yet.. but I still don't think there is a lot left in them.. not with the truck style long stroke !
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post #3 of 12 (permalink) Old 03-16-03, 03:47 AM
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would a turbo setup require extra heightening of the bonnet?

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post #4 of 12 (permalink) Old 03-16-03, 05:11 AM
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Would a turbo even fit in a BOSS motor? The exhaust is a tight squeeze. Hmm, interesting to find out?



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post #5 of 12 (permalink) Old 03-16-03, 05:15 AM
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Where are you going to fit two, reasonably sized turbos? + piping.. pretty tight.. Plus you have no turbo modular production experience to base it off. You could possibly fdit them where lindenfelder fits the turbos on the twin turbo vette (very awkwards in the wheel arches)..

Supercharger is the best option, heatsoak isn't such a problem if a intercooler is fitted, which should be a peice of cake, XR6T item please..They are pretty efficent these days, and I belive could easily be accomodated into a Boss engine bay.

A supercharger would replace alot of the induction pipining anyway.
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post #6 of 12 (permalink) Old 03-16-03, 03:19 PM
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Re: GTHO, Superchargers and THE BULGE

Originally posted by two4oh
Early times for the GT of course suggest that this is the least that FPV will need to do to claim HO status...... [/B]
Latest times posted here for the GT were a 5.8 in NZ and a 5.7 by FPV.

The times they are a changin'.

Like a lot of people have been saying they're new and with a little bit of experience, drivers will learn how to get the best out of them.
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post #7 of 12 (permalink) Old 03-16-03, 03:31 PM
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I think this is an excellent theory you have 240. Of course Ford aren't going to tell the 'REAL' reason for the buldge changes. I think if there is a supercharger fitted it will be between the banks as this is how the U.S. V8's have them, and I see Ford Aus using as much of their developed technology than re-doing what has already done OS. Also, the more they lift from American cars, the cheaper it will be for Ford Aus to develop, and (theoretically) the lower the sell price for the GTHO (or whatever) will be.

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post #8 of 12 (permalink) Old 03-16-03, 05:28 PM
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The top layer of the bonet was changed, not the bottom, so unfortunately your theory is wrong.

Welcome to the forums though.
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post #9 of 12 (permalink) Old 03-16-03, 05:46 PM
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The AEC 300+ Falcons had a Sprintex S/Charger in the valley blowing out the front to an intercooler and then back to the top of the motor. If you have a look under the bonnet of a 5.4L V8 you've got mobs of room.

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post #10 of 12 (permalink) Old 03-16-03, 06:30 PM
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Have a look at the kenne bell supercharger website, you will see how Ford would use a valley mounted charger, the same as fitted to the Lighning 5.4 Ltr. Much more efficient and slimer profile. And only half an hour to fit.

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