Heath I'd like to see the pics you mentioned. I'm very interested.
Pictures say a thousand words. Think diff gear set or rotary engine- explain it ALL day, or show me one for 2 seconds- ding! I know the red crank doesn't have counterweights opposing every crankpin so I'm dying to 'see' what you've done.
No secret- I will still go looking for other info elsewhere aswell. That's just what I do with everything. Doesn't matter how much somebody knows, I like to look further as someone else may have a different 'way' of showing something?
STROKER 6 CRANK
Started by
_hypo hb_
, Feb 18 2010 10:57 AM
187 replies to this topic
#77
xu1kid
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Posted 24 February 2010 - 07:57 PM
heres a video of a blokes torry on the dyno which makes around 250 rwhp which is pretty bloody good imo
Edited by xu1kid, 24 February 2010 - 07:58 PM.
#78
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Posted 24 February 2010 - 08:14 PM
That HP figure is absolutely dreaming if its NA like it says it is.
Cheers.
Cheers.
#79
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Posted 24 February 2010 - 08:23 PM
im just quoting what the video says, what do you reckon it would be ? it seems to roll the dyno pretty good
#80
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Posted 24 February 2010 - 08:31 PM
Well considering we know absolutely nothing bar its only turning to 5000 and its naturally aspirated i'll say 150.
It does sound fairly cranky which is why i put it so high.
Notice even though its been on the dyno he says "around".
Cheers.
It does sound fairly cranky which is why i put it so high.
Notice even though its been on the dyno he says "around".
Cheers.
#81
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Posted 24 February 2010 - 08:38 PM
yea i seen that on another video of his he reckon it will get into the 12 without reving it over 5500, a dyno sheet would be good, thats the first video of a 235 that iv seen hope mine goes as good when i finish it it was ment to be going last year still got a lot of work to do
#82
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Posted 24 February 2010 - 09:39 PM
Power does sound a little ambitious for those revs but I would say it's potentially plausible with a stroker. Compare that figure with other similar motors (i.e. cast iron everything, inline 7 bearing package with two valves per cylinder and similar displacement) and you'll get a fair idea of whether it's doable.
Always keep in mind how inaccurate chassis dynos can be, particularly if the person operating the facility isn't doing his job correctly. Could be say 30hp off quite easily, and the bloke posting that comment wouldn't actually be lying, just misinformed.
I'm probably a bit over-skeptical about chassis dynos - they're definitely very useful for tuning etc but as far as getting 'bragging rights' on them I'm just not sold on the whole thing really.
Always keep in mind how inaccurate chassis dynos can be, particularly if the person operating the facility isn't doing his job correctly. Could be say 30hp off quite easily, and the bloke posting that comment wouldn't actually be lying, just misinformed.
I'm probably a bit over-skeptical about chassis dynos - they're definitely very useful for tuning etc but as far as getting 'bragging rights' on them I'm just not sold on the whole thing really.
#83
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Posted 25 February 2010 - 10:59 AM
You've got mail.
#84
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Posted 25 February 2010 - 12:45 PM
I would think 250 would be pushing the limits. But I have to disagree with DJ. (haven't watched the vid)
1hp per cube is reasonably achievable in a red 6. We estimated my stroker at 160 and it was only running a WW and a very mild cam.
If you couldn't make 160-180 on a cranky 202 then you need a new mechanic. That's obviously with a good spark and carb package (and it has been done with small triples and VK dizzy....)
Grant..
1hp per cube is reasonably achievable in a red 6. We estimated my stroker at 160 and it was only running a WW and a very mild cam.
If you couldn't make 160-180 on a cranky 202 then you need a new mechanic. That's obviously with a good spark and carb package (and it has been done with small triples and VK dizzy....)
Grant..
#85
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Posted 25 February 2010 - 05:34 PM
Was that Moroso HP pub hp or dyno hp grant??
At the wheels or at the flywheel???
At the end of the day they reckon the 73 XU-1's had 190hp at the fly but it was more like 150-160 (130 ish at the tyres) in the real world...
Cheers.
At the wheels or at the flywheel???
At the end of the day they reckon the 73 XU-1's had 190hp at the fly but it was more like 150-160 (130 ish at the tyres) in the real world...
Cheers.
#86
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Posted 25 February 2010 - 08:18 PM
i dont know much but from my first hand experiance u can get 1hp per cube @ tires from a good 202 either 9 or 12 port it seemed to be easier with the use of 9 port head, both had flat tappet cams,cast slugs, 45mm webers.they are pretty stressed with the use of all the stock stuff at that power output but still managable if all the nessary precautions are taken.hehe
#87
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Posted 25 February 2010 - 09:57 PM
hey guys, just to add incase you dont know, that green tory in the video is from adelaide, ive seen it out on some cruises and it looks really sweet under the bonnet. its running EFI injection and coil packs i believe, so it may be 250hp, coz in some of the other videos he has, it seems to keep pullin pretty hard, cant be fenite on those HP figures tho,
cheers Blakey
cheers Blakey
#88
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Posted 25 February 2010 - 10:14 PM
hey guys, just to add incase you dont know, that green tory in the video is from adelaide, ive seen it out on some cruises and it looks really sweet under the bonnet. its running EFI injection and coil packs i believe, so it may be 250hp, coz in some of the other videos he has, it seems to keep pullin pretty hard, cant be fenite on those HP figures tho,
cheers Blakey
what type of injection vk style or webber style injection
#89
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Posted 26 February 2010 - 07:26 PM
hey anthony, its the weber style EFI like sonic injection have for sale on ebay. i did have a photo of it from under the bonnet, but seem to have lost it, heres a pic to give u an idea of what injection it is.
Cheers Blakey
Cheers Blakey
#90
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Posted 26 February 2010 - 08:10 PM
if i were u blake id remove that pic before it gets removed for u ................................................. 
#91
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Posted 26 February 2010 - 08:25 PM
Maybe Blake is Sonic's marketing man? 
#92
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Posted 26 February 2010 - 09:09 PM
hey anthony, its the weber style EFI like sonic injection have for sale on ebay. i did have a photo of it from under the bonnet, but seem to have lost it, heres a pic to give u an idea of what injection it is.
Cheers Blakey
is his sonic injection or some other type or homemade, im making up a 6 44mm throttle body setup for my engine using road bike throttle bodys and a redline 12 port manifold
#94
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Posted 27 February 2010 - 09:27 PM
Hi Guys
Weber Style EFI is completely different than my set up. Weber style retro fits are like electronic carbs. The intake is still wet and the fuel still suffers the same drop out problems. It does however improve start up through proper vapourization of fuel at low engine temps and engine speeds.
True MPFI fires the fuel into the head port and is therefore a dry manifold. The less time fuel is in the airstream the better - Hense modern Direct Injection. Mechanical Injected Sprint Cars have used a direct injection for years. Shows the large part Motorosport plays in technoligy for road cars.
How is the new Girdle going. Genuinley interested as development regardless of source keeps the Holden 6 alive.
I think the events of the last week have gotten this thred offtrack a bit, Sorry
Weber Style EFI is completely different than my set up. Weber style retro fits are like electronic carbs. The intake is still wet and the fuel still suffers the same drop out problems. It does however improve start up through proper vapourization of fuel at low engine temps and engine speeds.
True MPFI fires the fuel into the head port and is therefore a dry manifold. The less time fuel is in the airstream the better - Hense modern Direct Injection. Mechanical Injected Sprint Cars have used a direct injection for years. Shows the large part Motorosport plays in technoligy for road cars.
How is the new Girdle going. Genuinley interested as development regardless of source keeps the Holden 6 alive.
I think the events of the last week have gotten this thred offtrack a bit, Sorry
#95
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Posted 25 April 2010 - 02:40 PM
On that question about breathing capacity of V8 heads....whats the bore centres of a red 6 compared to a v8? has someone got a v8 and a red6 head gasket in the shed to lay over each other? I'm have a crazy and very economical thought.
My old boss used to tell me stories of when they were doing the 70's falcons they used to chop up cleveland heads, section them together and fit them to 250 blocks, went like the clappers but kept cracking them.
wait up, if it fits on a 250 block, it can fit on a 202.
Anyone got some Clevo heads laying around ?
#96
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Posted 25 April 2010 - 03:23 PM
On that question about breathing capacity of V8 heads....whats the bore centres of a red 6 compared to a v8? has someone got a v8 and a red6 head gasket in the shed to lay over each other? I'm have a crazy and very economical thought.
My old boss used to tell me stories of when they were doing the 70's falcons they used to chop up cleveland heads, section them together and fit them to 250 blocks, went like the clappers but kept cracking them.
wait up, if it fits on a 250 block, it can fit on a 202.
Anyone got some Clevo heads laying around ?
Can't see how Clevo heads could possibly go onto either a 250 or a 202 (unless of course you were prepared to cut and shut each individual chamber); the SBF bore centres are very similar to a SBC.
#97
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Posted 26 April 2010 - 03:12 PM
And SBC wont fit, tried that hehe.
Cheers.
Cheers.
#98
Heath
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Posted 26 April 2010 - 05:41 PM
^ 
#99
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Posted 21 October 2013 - 09:01 AM
I run a 234 stroker with a pro stroke crank(ford 221 with the holden rear grafted on.ive never had an issue with the crank,and supposedly its unknown for the interface between the two crank pieces to fail.I find with my engine the short rod ratio works in your favour.My engine makes more torque than a 5litre efi v8,and i can spin both rear
wheels in 3rd gear without dropping the clutch.So
wheels in 3rd gear without dropping the clutch.So
#100
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Posted 21 October 2013 - 09:09 AM
So as i was saying the combination works well.Ive got some dyno graphs i could post,and theyre pretty impressive,assuming the dyno reads correctly.The last time on the dyno 306 rwhp at 5800rpm,fully muffled on straight unleaded.The motor is injected with ITBs on weber manifold,and the head is a uniquely ported 12 port.Its hard to get anyone to port one like this however,and the guy who did mine is now sadly deceased.
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