HotGemini.com - Holden Gemini heaven
Home What's New About Help Contact




Serious advice 4 engine big hp/ET's
Goto page 1, 2  Next
 
Post new topic   Reply to topic    hotgemini.com Forum Index -> General Gemini Chat
View previous topic :: View next topic  
Author Message
Birko
tinkerer


Joined: 03 Apr 2002
Posts: 180

PostPosted: Tue Jun 04, 2002 8:14 pm    Post subject: Serious advice 4 engine big hp/ET's Reply with quote

hey,
I am wondering what kind of hp/kw would be needed to run about 15 sec. passes. My reason for asking is because my current car (HJ VCool is about this fast and i dont want a slower car. My original plans were for a G200 DOHC but after talking to Ross from SA on this forum ive opted against this.

Now im thinking of a fully worked 1800 bored to max (2.1ltr??), Big cam (43/80??), ported shaved flowed head, 10:1 comp, imported dizzy, rodeo/piazza injection, delco efi, dyno tuned etc etc

This engine is want i really want but i dont know if it will develop the desired horsepower ( ~ 120 rwhp or more?). Also will this car be as fast as my V8 in a gemini wagon? Or is a coupe/sedan a better option because of weight?
The car will have drag orientated suspension ie (90/10 front shocks. 70/30 rear) LSD, and big tyres.

What are the biggest engine hp figures people have heard of from these engines in NA(ie isuzu SOHC), and also i have heard of 'sams performance' producing 14.5 sec time slips with a engine running standard carby? does anyone know of this car.

One last thing does anyone know any good engine builders in perth experienced with geminis.
cheers
Back to top
View user's profile Send private message Send e-mail
Birko
tinkerer


Joined: 03 Apr 2002
Posts: 180

PostPosted: Tue Jun 04, 2002 8:24 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

quick gramma change
Back to top
View user's profile Send private message Send e-mail
Simon
rice boy


Joined: 16 Feb 2002
Posts: 47

PostPosted: Tue Jun 04, 2002 8:32 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

man....sams performance.he has a coupe running a 2 litre...its quickest pass is a 12.6....so yeah u can get these motors running quick....they will build a 1800....bore it to a 2L..stroke it using a mazda 2L crank..and depending on carbies...produce anywhere from 130 to 160hp+....as far as times...a few numbers punched in and i get a roughly estimated 14 second with 140hp at the flywheel...so 120 rwhp is looking at round the same..hope this helps a bit
Simon
Back to top
View user's profile Send private message Send e-mail
Mooch
backyard mechanic


Joined: 17 Oct 2001
Posts: 573

PostPosted: Tue Jun 04, 2002 8:37 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

making 145 at the fly with a 2ltr, single weber.
Back to top
View user's profile Send private message Send e-mail Visit poster's website
martin
backyard mechanic


Joined: 04 Oct 2001
Posts: 900

PostPosted: Tue Jun 04, 2002 10:00 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

making 130hp at the fly....


stock....

Smile <--- one happy bastard

but then there is the wagon..

making an estimated 10hp at the wheels lol
Back to top
View user's profile Send private message Send e-mail
Gold TX Sleeper
backyard mechanic


Joined: 05 Feb 2002
Posts: 509

PostPosted: Wed Jun 05, 2002 1:51 am    Post subject: Re: Comments 4 engine big hp/ET's Reply with quote

A while back (maybe 8-12 months), i read about a Gem Van/Wagon that i think was built by Gemmi-spares. From memory it ran a 9 sec 1/4. But what was really interesting was the fact that he retained the SOHC engine!!! I'm in the mood to go digging around for the mag, so i may post a summary of his mods once it's found - i have a funny feeling that it was ZOOM! magazine (I have piles of the bloody things to sift through). Something interesting i came across in the latest 'Fast Fours', was the fastest 'Race Four - RWD' times.... Sitting in 10th place is a Gem with an 1800 that runs a 9.74 1/4 @ 145mph - This sounds to me like the Gem i have read about. So it must still be alive and kicking (or is that alive & screaming?).
I know it's a little way out of your KW/quarter mile goal, but it's a little trivia to let you know that these engines can be made to get up and go. Most friends and aquaintances i have with Gems are running in the 14 - 15sec zone, so it is pretty do-able and only needs a minimal budget when compared to most other cars.
Back to top
View user's profile Send private message Send e-mail
TXcoupe
petrol head


Joined: 05 Oct 2001
Posts: 1675

PostPosted: Wed Jun 05, 2002 2:59 am    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

hey brisko i have heard of a 1.8 punching out 180rwhp. if your in perth go see graham at southside engine centre and he will tell you wat you need.

i asked and he said get a 2L he bores it to punch out 2.3L and then a custom grind it will move.

oh yeah your not the guys from port kennedy with the V8 gem ute and wagon are you?
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Gigfus
tinkerer


Joined: 06 Oct 2001
Posts: 134

PostPosted: Wed Jun 05, 2002 3:06 am    Post subject: Re: Zoom = turbo Reply with quote

zoom is a mag that has all turbo cars...n e car will do a nice quarter with a turbo...i think the guy said he wanted NA engine ?
Back to top
View user's profile Send private message Send e-mail
nos
tinkerer


Joined: 24 Apr 2002
Posts: 274

PostPosted: Wed Jun 05, 2002 3:24 am    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

i was tossing up ideas about all kinds of things from a 13b turbo -illegal in nsw as i found out Sad-, a nissan s13 sr20det, a nissan s13 ca18det and a nissan fj20 turbo but after all that i'm probably gonna go for the 2L turbo piazza motor. with a few simple mods i can run it mid 11's and with some more in-depth work i can probably knock a second or more off that - has been done. i think if you want a naturally aspirated car go the 1800, maybe put rodeo heads on it, a bigger exhaust and perhaps even bore it out to 2L. just a thought but it will get it going great - should suit what you're trying to do.
cheers
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Phil
tinkerer


Joined: 05 Oct 2001
Posts: 170
Location: Brisbane/Sunshine coast

PostPosted: Wed Jun 05, 2002 4:14 pm    Post subject: Why g180? Reply with quote

I'm confused as to why alot of people say to get an g180 and bore it out to 2l. Does everyone realise that a bored-to-2l g180 has the exact same dimensions as a g200(ie. they have the same stroke)? Why not just go the g200? I've read several articles stating that the g200 has a better chain tensioner, oil pump etc. than the g161 and g200.
Back to top
View user's profile Send private message Send e-mail
Birko
tinkerer


Joined: 03 Apr 2002
Posts: 180

PostPosted: Wed Jun 05, 2002 4:31 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

Thanks for the advice guys. If like most of you say 14-15sec times are possible with about 120rwhp then that is what ill go for. But one last thing will a wagon be slower? Im not really into stereos, and i figure ill have alloys so will these probaly make the difference between a coupe/sedan and wagon?
Back to top
View user's profile Send private message Send e-mail
alan
tinkerer


Joined: 07 Apr 2002
Posts: 429

PostPosted: Wed Jun 05, 2002 4:44 pm    Post subject: Re: Why g180? Reply with quote

2.0 litres are harder to find, and cost more than the 1800's.
Back to top
View user's profile Send private message Visit poster's website
TXcoupe
petrol head


Joined: 05 Oct 2001
Posts: 1675

PostPosted: Wed Jun 05, 2002 5:05 pm    Post subject: Re: Rephase; Decent hp(kw)/ ok ET's Reply with quote

the wagon is heavier but for some unknown reason are more stable?
there use to be a yellow TD wagon at ravenswood i think his name was john and he ran that quite often
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Ember
rice boy


Joined: 16 Oct 2001
Posts: 13

PostPosted: Wed Jun 05, 2002 5:49 pm    Post subject: Re: Serious advice 4 engine big hp/ET's Reply with quote

I have TG gem with a worked 1800 SOHC, exhaust twin webers...it gets about 90 rwkw. I've done about 5 runs at calder and the best i could do was a 15.5...but i think i could probably do a few 10ths better if i took air filters off, changed gears a bit earlier and slicks.
Back to top
View user's profile Send private message
GasGem
backyard mechanic


Joined: 05 Nov 2001
Posts: 755

PostPosted: Wed Jun 05, 2002 6:55 pm    Post subject: Re: Serious advice 4 engine big hp/ET's Reply with quote

Your in Perth,

Go and see Per4mance, Grant Bosjac?? Welshpool, not sure spelling, anyway he did me a GT25 and awsome SS pipe work and Intercooler, for a good price, he and his mates know all about Turbos, and could you get into a deal that will run about high 12's-13's,

Well worth a chat about your plans they have a lot of expereiance, and very good quaity work.

Cheers
Eggy
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    hotgemini.com Forum Index -> General Gemini Chat All times are GMT + 10 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group
© HotGemini.com 2000-2007 | Privacy Policy | Terms of Use | Site Map