Maybe I could be wrong.... but adding lash caps would add lift.
As long as you don't go into coil bind of course.
I know it wouldn't be much..... unless you are capable of make thick ones.
I'm gonna do some digging :)
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Maybe I could be wrong.... but adding lash caps would add lift.
As long as you don't go into coil bind of course.
I know it wouldn't be much..... unless you are capable of make thick ones.
I'm gonna do some digging :)
are you talking about increasing lift for the valvetrain? Look for LSR Mikes threads on his engine build - all the info you need is in those threads.
??? lash caps ??? on a 4g64 ???
Please do post up your findings .
Edit, can1991ram Your findings???
There may be different ratio rockers from another 4G6X engine that might be compatible. That being said, you don't want extra lift in these engines - you want wider valve timing duration. Lift will kill power. You will need a good cam regrind and possibly an adjustable cam gear to help dial it in if it's not a super accurate regrind
.....edit.
Greater lift “may” have the potential to hurt low rpm performance but that would be offset by greater upper rpm performance. Depends on how much we are raising the lift. It’s all relative.
With Respects,
can1991ram,
??? lash caps ??? on a 4g64 ???
Please do post up your findings .
????
canram
????
I have been talking to a few Australian engine builder that say they have a grind they could put on my stock cam that would help. Of course this means grinding some of the base circle away to create the taller lift.
Now sure if I want to send my cam half way around the work to get this done.
BUT... DOHC heads don't grow on tree around here so going that option isn't easy either.
You have an advantage atm. The Oz dollar is toilet paper @ $0.66 USD. The freight will always be a major PITA but if they are prepared to source a used cam for you locally, that would be helpful. Who is offering the service BTW?
Let me look through my email and see if I can dig it up... it was a few months ago.
The dollar isn't as good from Canadian to Aus... 1 Can equals 1.12 Aus.... but anything helps
some run other rocker ratios on the 2.6. No measurable gain. SOHC higher rpm magic is in the camshaft
oz/nz cam quality control better than usa cam regrinds, from my obsevations. Most 2.0 sohc staz run Camtech, Wade or Crow
One of the most impressive 2.6 street starquests got his cam all the way from oz, Totally changed the charcteristics
Sourced from a 2.6 drag racer. Ran a 12.4 sec using a t3/t4(60-1) @13psi only! Instant spinup, tire fryer. Flatout works
Schnieder is most popular starquest cam, but generally not impressive gains. Their valve springs too weak also, but cheap
One starquester meticulously measured his. None of the lobes matched the cam card. Got into it with Schnieder
Finally they gave in, supplied another regrind. Picked almost 100hp!! on the same setup. Lobes measured matched cam
Schnieder CAN perform.... but no telling what you'll get in the mail. Shouldn't have to go thru all that crap imo
Years back when DSM guys were looking for the benchmark HKS cam equal, Crower & Web cams failed to deliver
Deltacams.com seems to get the DSM cams "right", and at a considerably lower cost
I would have no problem sending my cam to that usa regrinder.
Starquest 2.6 veterans run beehive springs. Austarion guys will have alternatives too, no doubt
Ouch. Now the Oz dollar doesn't look so bad :shakehead:Quote:
Originally Posted by Can1991Ram
The regrind was going to be through
https://www.kelfordcams.com/global/
can1991ram
Updates on the 'lash caps' ???
Thx.
a LOT of information on lash caps, using different application mitsubishi rocker arms (to change ratio), mechanical vs hydraulic cam/valvetrain, roller setups etc., found on starquestclub, as they've run em all
http://www.starquestclub.com/forum/i...c=116031&st=20
the mechanical valvetrain from the 2.0 + a proven starion cam grind/& springs.... seem like the simplest path for a turbo 2.4
I wish those cars/engine combos were more popular in Canada.
I'm fighting the urge to V8 swap ( no... not an LS)... but for now I will keep up the good fight with this little 4 cylinder
Thx dash !!!
I really do appreciate good infoapologies canram,Quote:
Originally Posted by dash
according to your posts haven't you built a V/8 conversion already????
I built one 20 years ago... super easy swap if you have an automatic truck already.
The truck I have now is so complete I would really hate to pull the 4 for a 360 like the '86 I had before.
The other truck with a mild 360 ran 12.20's at 116 with the stock rear axle (welded) and stock brakes and shifter... pretty sketchy to get it to stop....LOL
It weighed 2550lbs with the 360 in it.
Here is an old cached copy of my old geocities website I had for the truck.
http://www.geocities.ws/ram50v8/swap.htm
:) Thx for the link .
I'm curious how much a custom grind from a blank would cost... who would you even contact?
It probably wouldn't be from a blank - more than likely billet $$$$$ :shock:Quote:
Originally Posted by Can1991Ram
The only blanks i came across were from the aussies.
I had my cam re-ground for more duration, and heisted the Manual adjusters from the SOHC 1.8 motor (4g61) all the parts fit.
I also had heavier springs to redline at 8K, hence the manual adjust lifters, hydraulic lifters were crushed.
^ take note of LSRMikes' post. Hydraulic rockers aren't a good idea for any kind of performance platform. Especially with a high lift cam and heavy duty valve springs. The uprated valve springs will overload the hydraulic lash adjusters before the cam starts providing the extra lift. I would take a guess that a 1.8 cam will be slightly more aggressive than a stock 2.0 to try and make up for overall performance, so that could be an option (might be the same grind/might not make that much of an improvement...:shrug:)
also notice the grind was for duration, not for lift. There is a max lift on these motors that if exceeded, gain you nothing. On the 2.6, you can get valves that are swirl polished and reduced stem at the valve head for better flow as well as a larger head. not sure if the 2.4 has valves like that available.
???
Humble respects ---
My research indicates - ALL 4 cyl Mitsubishi balance shaft engines have an undersquare bore to stroke ratio ???
Correct. Found this Mitsubishi enthusiasts page with a bunch of stats and engine designation numbers as a reference which might be good to add to a wiki page(?) - http://mitsipedia.info/index.php?title=AstronQuote:
Originally Posted by claych
I will have to have a look. I'm assuming the 1.8 has the exhaust on the proper side like our trucks?
I'm still leaning towards using the 2.0 head I have... I just wish there was an easy was to fill the voids with the air valves are...
I wish I had the ability to Tig Weld... I would fill those in. You would get a crazy compression though which might not be good for turbocharging or supercharging.. since i still haven't made up my mind which I will do.
All of the SOHC 4G6X engines of this generation are configured this way. Using a complete head off a 4G62 should not only bump up compression, but the cam should be slightly more aggressive as well. Some engine builders who work with turbos are saying stuff like "build the best NA engine you can, then turbocharge it...". I'm not even close to being able to comment on the ethos behind that but having high compression on a forced induction engine sounds like a trip to detonation land.
I do know the "Little Red Wagon" ran a 12.5 compression ratio Hemi with a Supercharger for years on the wheelstanding circuit.
I would think forced induction and high compression would give you insane cylinder pressure... not of the good kind
there are 2 ways to look at high compression and turbo/supercharging - you can build boost faster with high compression, and control it with the ECM for spark and fuel, or not go near it. look at some of today's turbo motors - some are running high compression and have no issues. It is the tune than makes or breaks the motor. If you are going carbed, then that is a whole different story, as the carb has to be run rich and the distributor curve needs to retard a lot to prevent detonation.
I really want to have a turbo fed supercharger set up... like they are don't in europe..
Supercharger takes out the lag of the turbo...
It'll be impressive when you get it all together - but that is a lot of plumbing to make sense of. I've seen a twin charged MR2 and I nearly fell over when I saw how much pipe work was crammed in around the engine. I've had a look at Mercedes superchargers and they come up (relatively) cheap on ebay. Wonder if they're do-able... :scratchheadyellow:
most twincharge final result suck or fail, because the 'builder' went too deep over their head
Make sure u capble of simply a perfect running turbo setup b 4 even attempting twincharge
Not only is the plumbing nightmare, but the heat management and most of all the transition between super-to-turbo
1.6 MR2 "drove like a turbocharged hi compression strong V6". Superb torque off idle to 7000rpm+. Ran mid 11sec 1/4, ~20years ago
I think you all might be wanting variable geometry turbochargers then. They are the best of both worlds.
The channel on you tube to watch is Bank Performance. He is a master of heat management and power.
I will just start with the turbo.
Seeing about having a couple 4G64/63 Single OHC exhaust flanges made just in case I screw one up on the header.
I really thought about mounting the turbo under the bed.. but the plumbing is WAY worse doing that.
Really thinking about moving away from DSM electronics to readily available GM parts such as the 2 bar map sensor and throttle body. It will work WAY easier with aftermarket electronics.
BTW I have a youtube channel that I hope will show this progress.
You will see an in car of a Big Block Aspen I used to have as well as a 1968 Mustang I was hired to drive back in 2003.
https://www.youtube.com/channel/UC4urOgEUPFC6PNMDfLGDGqg
http://www.ecmtuning.com/product_inf...products_id=36
DSM electronics tune 10sec street or 8 sec strip. Configure to run GM MAF OR speed density/MAP sensor
press the clutch, build boost on the line. Covert oem boost gauge to monitor knock... tuning, logging
lotsa cool stuff. What more do u need ?
Twincharged MR2 here: http://www.mr2.com/OWNERS/GeraldA.html
Featured on cover of Sport Compact way back. I have that issue
I recall writer saying it felt like the seatback fabric left an imprint on his back it pulled so hard... any rpm
Mind boggling from a weezy puny lil ol 1.6
Great info!!!