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cam regrind

Postby dnalunchie » Mon Jan 03, 2011 5:15 pm

Has anyone had this done? just wondering how much of a difference it makes to a stockish car
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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Postby Lloyd » Mon Jan 03, 2011 5:29 pm

As in grind to standard spec? Please don't say swift...
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Postby rx7guy » Mon Jan 03, 2011 5:38 pm

It might be better
The torque band is wide and the road is narrow
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Postby Dell'Orto » Mon Jan 03, 2011 5:59 pm

Depends on the grind, stock car I wouldnt bother. At a minimum you really want to bump compression up. Need to do intake and exhaust as well.
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Postby dnalunchie » Mon Jan 03, 2011 6:16 pm

Lloyd wrote:As in grind to standard spec? Please don't say swift...


cough.....
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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Postby Mr. Mainstream » Mon Jan 03, 2011 6:22 pm

Kelford CHCH was able "regrind" my factory BPT cams for fair price.
had full boost almost 1g earlier so was stoked
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Postby RedMist » Mon Jan 03, 2011 6:24 pm

G13B DOHC ? You can get away with a surprising amount of duration and lift with the G13B. Be prepared to work the engine even harder than you do now, and don't expect much torque from the engine.
Quad throttle bodies, bump in compression, by far the best 1300cc race engine.
A regrind? You'll have to talk to a cam manufacturer. I suspect you'll have all sorts of valve train geometry issues.
Last edited by RedMist on Mon Jan 03, 2011 8:47 pm, edited 3 times in total.
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Postby MAGN1T » Mon Jan 03, 2011 7:16 pm

I've had 4 motors that I've fitted reground cams to.

Mk 3 Zephyr, straight 6, triple SUs & exhaust. The cam made a huge difference.

Ford 272 Y block V8, headers, holley, likewise a huge difference.

Ford 351C with rajay turbo and Holley 750, so much difference that the fuel pump couldn't keep up anymore.

Mitsi GTO 6G72,quadcam. A total disaster due to the cam grinder fecking the job up then the installer fecking it up then getting lied to , then fixing it myself.
As for geometry problems, as with any cam, increasing the lift and duration will make the geometry non standard. It won't stop it from working though.
If you're starting with a fairly good cam then the differences won't be as noticable. Maybe not even worth the expense. I wouldn't waste the money doing another Mitsi.

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Postby RedMist » Mon Jan 03, 2011 7:34 pm

Steve, every engine you have listed has lifters. To a certain degree you can adjust out most geometry issues. I don't know about reducing the base circle on a DOHC engine. The forced geometry issues might mean having a shim or bucket pickup.
Saying the above, I've only ever installed new billets in my DOHC engines.
Was recommended regrinds as a cheap option for my 6a10.
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Postby dnalunchie » Mon Jan 03, 2011 7:52 pm

i dont think mine is a g13.... its just a normal swift 1.3 ltr
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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Postby Bling » Mon Jan 03, 2011 7:53 pm

Much better cam options for a V9 than regrinds man, my2c

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Postby dnalunchie » Mon Jan 03, 2011 7:58 pm

lol fair point
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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Postby Brawler » Mon Jan 03, 2011 8:05 pm

If its not broke don't fix it the swift isnt a race car, and at 1.3L Its gotta be good on gas, No point doing this.
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Postby dnalunchie » Mon Jan 03, 2011 8:08 pm

I am having performance car withdrawel issues. I need boost or revs or something!
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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Postby Brawler » Mon Jan 03, 2011 8:24 pm

dnalunchie wrote:I am having performance car withdrawel issues. I need boost or revs or something!


keep saving mate, im sure your subaru will be fast
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Postby strx7 » Mon Jan 03, 2011 8:40 pm

dnalunchie wrote:i dont think mine is a g13.... its just a normal swift 1.3 ltr


its a G13A 1324cc, same bore as a G13B (1298cc) but 1mm more stroke.
the G13B twin cam is the motor redmist is thinking of. the G13B comes in both SOHC and DOHC, and in SOHC config it comes as 8 valve, 16V CPI and 16V MPI
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Postby cogent » Mon Jan 03, 2011 9:14 pm

dnalunchie wrote:I am having performance car withdrawel issues. I need boost or revs or something!


lend you my rx7 for a week in exchange for a hoon on ya sis?
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Postby Lloyd » Tue Jan 04, 2011 12:17 am

Wanna buy a VCV10? :P
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Postby rollaholic » Tue Jan 04, 2011 7:34 am

cogent wrote:
dnalunchie wrote:I am having performance car withdrawel issues. I need boost or revs or something!


lend you my rx7 for a week in exchange for a hoon on ya sis?


its a deal... its a steal...
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Postby dnalunchie » Tue Jan 04, 2011 8:49 am

Lloyd wrote:Wanna buy a VCV10? :P


depends.... what is it....
EX:89 RS and GT Legacys, 90 EF9 Civic, 95 Integra R, 95 AE101, 90 ST185, 88 Accord, 87 3rdoor and 5door Swift hatch, 91 Pontiac Lemans, 80 Liftback Celica, 95 Hornet 250
Current: 90 3sfe Corona
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