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Underbody braces, turbos and more!

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PostPosted: Mon Feb 20, 2006 11:33 am 
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Most of the grind specs are buried in the custom camshafts thread so I'm posting them here. It will make it easier to see what is available for your motor.
Lift is listed as gross (at the valve) in inches, and duration is measured at .050" lift, at the valve.

The 89-up 3cyl and GT have the same valvetrain design, so these are listed together.
Lift/Dur
305/184
335/200
340/210
350/218
365/222*
375/226*

85-88 3cyl/85-94 1.3/1.6 8V
358/212
375/216
395/226
420/254
448/240

1.3/1.6 16V SOHC
340/200
355/204
365/210


This is an excellent grind for the G13 SOHC 16V, and works well with the OBD II

.340" lift, 192int/198exh duration
Thats a 8 degree gain on the intake and a 14 degree gain on the exh.
The exh. duration, and extra .060"(!!) lift gain will help offset a less than ideal exhaust.

I have developed a new cam for the G13/G16 16V SOHC.

206 degrees duration at .050" on the intake, with .370" lift
210 degrees duration at ,050" on the exhaust with .370" lift.

This is a very aggressive cam for the G13, and slightly less so for the G16.
Probably will not work without setting a code on the OBD II cars, but would pull strongly past the fuel cut anyway.
Should work OK with the OBD I, and G16 without problems.
This is a very high lift cam for the application, with generous duration on the intake side.
The exhaust is a good compliment.


I can do cams for other applications, but these are the most popular ones. I have cores for both 3cyl. motors, GTi's, and pre 95 4cyl. 8V, but not for SOHC 16V motors.
Cost without cores USD
89-up 3cyl. $150 (cams with * require extra machining at a cost of $25)
Early 3cyl/4cyl 8V $150
GT 16V $300
SOHC 16V $200

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Last edited by suprf1y on Sun May 21, 2006 8:00 am, edited 1 time in total.

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PostPosted: Mon Feb 27, 2006 10:33 am 
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I wish I knew what the stock profiles were for my engines so I could judge the difference. Are your grinds progressive for the 16V?

Thanks,

-Steve

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PostPosted: Mon Feb 27, 2006 5:37 pm 
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For comparison, stock profiles are

Lift/Duration at .050"

85-87 1.0/3cyl 330L /192D
89-01 1.0/3cyl 330 /198
GT Int 295L/192D Ex295L /198D
Cultus In 305/L192 Ex305/D198
1.3 8V 330L/192D
1.3 16V SOHC 308L/184D
1.6 8V 356L/202D
1.6 16V In 308L/192D Ex308L/198D

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Last edited by suprf1y on Sun Dec 30, 2007 10:08 pm, edited 2 times in total.

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PostPosted: Mon Feb 27, 2006 6:56 pm 
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I = Intake E = Exhaust :wink:


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PostPosted: Mon Feb 27, 2006 6:56 pm 
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E for Exhaust cam
I for Inlet cam

Cheers

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PostPosted: Wed Mar 01, 2006 1:45 am 
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Location: Jamaica, Kingston
hey mike can you give us a driveability / idle quality comparison between the stock cams and the ones u have listed? for example, you can state that a specific cam profile is wild or mild or like saying it idles without lumps at 1000rpm or 2000rpm for a wilder cam.

thanks
Ian


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PostPosted: Wed Mar 01, 2006 11:14 am 
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I would prefer to take specific questions from people. There are alot of grinds there, and results will vary depending on application. The questios will still come up, anyway, so I prefer t answer them on a specific basis.

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PostPosted: Sat Mar 18, 2006 8:53 pm 
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Location: Jamaica, Kingston
hey suprf1y

how much degrees of advance or retard can i run on my adj cam gears with your camshafts (340/210) before i hit the piston?

oh and do you know the lobe separation angle of the cams?


Last edited by badboyscyari on Sun Mar 19, 2006 10:22 am, edited 1 time in total.

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PostPosted: Sat Mar 18, 2006 8:58 pm 
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I don't know how much you can adjust them before hitting a piston. Every motor is potentially different, so I wouldn't want to guess. I can say that if you have to advance/retard them that much, then you have a tuning problem.
If I recall, stock separation is 106, or 108 degrees.

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PostPosted: Sun Mar 19, 2006 10:20 am 
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thanks anyways

i was jus reading a couple of d-sport and sport compact mags where they had extensive tech articles on cams. so i haven't even started doing any tuning yet, i jus wanted to kno my limits thats all.........


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PostPosted: Mon Mar 27, 2006 4:08 pm 
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What kind of differences can I expect from going from the stock cam to the 210 duration cam for the 16V SOHC 1.6L ?

As it sits, I have no dead spots in the powerband, with excellent torque from 2200-4200 RPM. (tq peak).... and not bad.... top end but definetly falling off by 5700+ RPM. (In/Exh and pulley)

I recall that your 3 cylinder cam improved all area of the powerband when installed properly,

On an aside.... why have 16V if you never take advantage of the RPM capability of 16V in a 1.6L?

-Steve

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PostPosted: Mon Mar 27, 2006 5:57 pm 
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The 4V/cyl motors are much more duration sensitive than the 2V/cyl. motors.
For this reason, you gain RPM, and lose bottom end with much less duration than what is required for a 2V/cyl. motor. You can expect a shift in RPM range of about 1000RPM for every 10 degree increase in duration for the 4V/cyl motors. It is about half that for a 2V/cyl.
Of course, every application is potentially a little different, and the 1.6 with a much longer stroke should be a little less sensitive to low end power los.

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PostPosted: Sat Jul 01, 2006 11:20 am 
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Quote:
I recall that your 3 cylinder cam improved all area of the powerband when installed properly,


i just installed a cam on my 3cyl and i did notice a bit more power but what i did notice is that the power is there almost at idle right to redline. now i have a smooth pull rather than specific power ranges

(500-2500) 2600-3800(dead) (3900-redline) power

now its steady power all the way up.

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91 sidekick, 4x4 2" lift 30" swampers, winch,
to come ..... performance bits.... body lift, custom bumpers


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PostPosted: Sat Jul 01, 2006 12:35 pm 
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suprf1y wrote:
85-88 3cyl/85-94 1.3 8V
358/212
375/216
380/240
395/226
420/254
448/240

Cost without cores USD
Early 3cyl/4cyl 8V $150


How much is core charge? And would cost be the same getting the 380/240 cut from a n/a cam as from a turbo cam? I'm trying to keep all of my stock parts so I could switch it all back to stock if need be and i've got a n/a cam layin around.

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PostPosted: Sat Jul 01, 2006 4:14 pm 
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I don't have an much in the way of Mk1 3cyl. cores, so I am looking at that charge right now. The idea behind the core, is to encourage return of the old one.
I'm bumping that one up to $50, same as the GT cams.

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 Post subject: How much cam
PostPosted: Sun Jul 23, 2006 11:05 pm 
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How much cam will the stock ECU take? I have heard that you can go up to about 270 degrees in duration. Bob


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PostPosted: Sun Jul 23, 2006 11:38 pm 
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Which car do you have, which engine do you have and where the hell are you? fill out that info and people will be much more pleasant and willing to answer your questions.

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 Post subject: Cam
PostPosted: Sun Jul 23, 2006 11:53 pm 
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 Post subject: Cam
PostPosted: Sun Jul 23, 2006 11:54 pm 
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And excuse me for my ignorance. I thought I was following the 3 cylinder thread. Bob


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 Post subject: Re: How much cam
PostPosted: Mon Jul 24, 2006 7:03 am 
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geoflyboy wrote:
How much cam will the stock ECU take? I have heard that you can go up to about 270 degrees in duration. Bob


That sounds like an advertised number, and I don't use advetised duration numbers. The 3cyl. will work fine with all the profiles I have for it, with the exception of the 226/375, which causes problems loading up on idle, but works fine at all other RPM levels.

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PostPosted: Wed Oct 11, 2006 8:11 pm 
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hey mike, was wondering if anything needs to be done to the head to support a more aggressive grind then 340/210 for the gt motor.


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PostPosted: Wed Oct 25, 2006 9:40 am 
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Don't know how I missed this, but no, the stock GT head will take my wildest cam, with no trouble.

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PostPosted: Sun Jan 14, 2007 7:53 am 
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Hi looking a set of cams for my rallly car would the most wildest set of cams be the bests?? its running r1carbs and port n polished with valve seats all angled hyd lifters would i need to convert to solid lifters !!!

Ross

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PostPosted: Sun Jan 14, 2007 7:56 am 
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Sorry forgot to mention its a 1300 16v DOHC G13B

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