suzcruz
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| posted on 4/4/20 at 02:03 PM |
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1600cc choices
Hello, has anybody researched 1600cc motors?
Im planning to build my car within racing parameters for open sportscars,
This means a 1630cc motor rev limited to 9500rpm, the puts my ideal stroke at 70mm or below.
Bigger bore means more valve area, whats the most oversquare 1600cc one can obtain? Car based, not bike.
No brain, no pain!
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Shooter63
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| posted on 4/4/20 at 04:14 PM |
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You could try a Honda b16, but I'm pretty sure it runs backwards, a Ford BDA, old, but the top guys are wringing some decent power out of them,
I suppose you could de-stroke a BDG, depends how much money you want to spend. Also depends what configuration you are running, front engine, rear
engine etc
Shooter
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Ugg10
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| posted on 4/4/20 at 04:27 PM |
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My vote would be for the 1.6 Zetec SE from a fiesta/Puma/early focus.
All allow, got a crank spigot bearing cavity to take the 22mm Sierra one, no vvt or similar to fuss about, plenty of tuning options but add a ss4 cam,
rod bolts, hd springs, throttle bodies, exhaust and an ecu and you have a very reliable 165hp and revs to 8500rpm without even opening it up, plus it
is very light iirc less than 100kg dressed. Plus if the engine goes bang it is only £200 to replace.
Plus bellhousing for type 9 or type 9 figment or kits available for the 6 speed rx8.
[Edited on 4/4/20 by Ugg10]
---------------------------------------------------------------
1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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suzcruz
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| posted on 4/4/20 at 09:18 PM |
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The B16 is a bit rarer these days, i like the short deck height and vtec.
Front engined so am not needing transaxle.
There is a strong argument for the zetec aside from the longish stroke, the uk formula fords ran a bit of development for those in a similar weight
vehicle which is a good baseline, plus the sentimental factor of having a ford axe.
I looked into the A class m266.920 with 2 litre head swap, but the deck height is stupidly tall 235mm which gives a conrod like a toothpick dancing up
down 9500 times a minute, risky choice but some good numbers in those motors.
No brain, no pain!
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ettore bugatti
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| posted on 4/4/20 at 10:56 PM |
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Worth looking at s1600 or r2 rally cars.
Citroen c2 was pretty good:
http://tech-racingcars.wikidot.com/citroen-c2-s1600
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cliftyhanger
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| posted on 5/4/20 at 05:39 AM |
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The old corolla twin cam engine was pretty good.
If the wallet is fat IKE sell a variety of different stroke cranks for the zetecs, along with appropriate pistons/rods.
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johnH20
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| posted on 5/4/20 at 08:45 PM |
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Depends on your target class and the regs. A 'Locost' race engine is an oxymoron. Making power is one thing , holding it together at
anything approaching 9500 rpm is another. Honda seemed to have cracked it with their type 'R' VTEC engines but upgrading anything more
pedestrian to that sort of speed is going to be expensive - crank, rods, block reinforcements, the list goes on. If it was me trying to take the most
economical approach ( if allowed by regs ) I would search out a used Rover K series from a full race Caterham. There are probably thousands of these
things competing in all sorts of classes all over the world. The Rover K series is much maligned as a production engine ( head gaskets etc ) but
PROPERLY BUILT race engines seem to be pretty reliable. 1800 cc VHPD engines seem to make 230 -240 bhp in developed form and have been widely used in
Caterhams and Lotus Elises, so I would guess 200 out of a 1600 should be doable. Lots of Knowledge and parts available. I would start by contacting
Dave Andrews and doing some online search.
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Rich J
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| posted on 5/4/20 at 09:11 PM |
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3 companies in Ireland getting well north of 200BHP from the small block GM engine but at a price
9100 rpm
235 BHP
230 BHP
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adam1985
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| posted on 6/4/20 at 05:58 PM |
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Toyota 4age, getting abit older now though
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JMW
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| posted on 7/4/20 at 08:08 AM |
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The OP wanted a stroke of les than 70mm, the 4age (and BDA of course) is 77mm. On the plus side for the 4age there seems to be an active tuning scene
and tuning parts suppliers in Australia for the Toyota engine.
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annodomini2
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| posted on 19/4/20 at 09:37 AM |
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You're unlikely to get such an over square engine from a production car.
Most cars are under square for efficiency reasons.
Just under 70mm stroke, for just under 1600cc would need IRO 85mm bore.
Only thing that may come close with that stroke from the factory is a Citroen 1.1 69mm stroke, with an over bore (if you can over bore it that much)
to 85mm, fit the 16v head from the 1.6.
However you are unlikely to be able to increase the bore diameter by 7mm from the 1.6 bore size!
Your only option would be to under stroke a 2.0 with the required bore, not a cheap job custom crank and rods.
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