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Gtir Motorsport club » Tech room » engine build's » Rocker cam gap

Rocker cam gap

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1 Rocker cam gap on 9th January 2018, 9:17 am

Bandyleg

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Is their a how to on the forum for checking the rocker gap to the cam... i couldnt find anything but then again i couod be wrong.
Thank you Smile

2 Re: Rocker cam gap on 9th January 2018, 8:13 pm

nomad

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Admin
Admin
Shim clearances you mean ?


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3 Re: Rocker cam gap on 9th January 2018, 9:05 pm

gtir_woody

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moderator
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This?

https://youtu.be/lastgWJ4Ooo

4 Re: Rocker cam gap on 10th January 2018, 8:37 pm

Cosmic73

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Manual says 0.2mm but 0.1 is generally advised,

5 Re: Rocker cam gap on 10th January 2018, 8:44 pm

Bandyleg

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Yep thats the jobby im talking about Smile
Im getting their slowly. I need to check the spray bar and the gap, as the lobe on poston 1 on the intake looks like its been getting hot. Its not marked or chipped or dented or any scoring so I need to catch it now and find the issue.



Last edited by Bandyleg on 10th January 2018, 8:52 pm; edited 1 time in total

6 Re: Rocker cam gap on 10th January 2018, 8:46 pm

Bandyleg

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@Cosmic73 wrote:Manual says 0.2mm but 0.1 is generally advised,

I did read this on one of the posts and bob had said 0.1 is better as its less chance of throwing rockers at higher rpm?

7 Re: Rocker cam gap on 10th January 2018, 8:55 pm

Cosmic73

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Have you checked the spray bar for blockages?

8 Re: Rocker cam gap on 10th January 2018, 8:59 pm

Bandyleg

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Not yet no, its on the list. I need to find the torque setting for putting it back on.

9 Re: Rocker cam gap on 10th January 2018, 9:08 pm

Cosmic73

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Should be in the service manual pdf, Mr B put some links to it on one of his threads.

10 Re: Rocker cam gap on 10th January 2018, 9:14 pm

Bandyleg

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Ive got everyone of those manuals, I just need to find the right page ????

11 Re: Rocker cam gap on 10th January 2018, 10:48 pm

Mr B

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gtir technician
gtir technician
page 210 bible 1

12 Re: Rocker cam gap on 11th January 2018, 12:45 pm

Bandyleg

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Thanks Mr B Smile

13 Re: Rocker cam gap on 11th January 2018, 1:28 pm

GTI-R US

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Management
Management
Dont use those torque settings unless you use new bolts or i guarantee that youll snap the bolts in head
Just tighten them by hand with 3/8 wrench until you feel they are tight and they will be fine


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14 Re: Rocker cam gap on 11th January 2018, 10:30 pm

Mr B

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gtir technician
gtir technician
people strip cam cap threads in SR heads a lot too, tighten down in more small steps  making sure cam not binding and going down even and don't worry about torques till final step then check them to lowest value 9Nm & dizzy drive cap bit tighter .

15 Re: Rocker cam gap on 12th January 2018, 8:42 am

Bandyleg

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Ive only taken the bolts needed to remove the oil spray bar, one hole was/is currently blocked.

16 Re: Rocker cam gap on 12th January 2018, 11:44 am

Mr B

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gtir technician
gtir technician
was the blocked one for the effected lobe .

17 Re: Rocker cam gap on 12th January 2018, 12:59 pm

Bandyleg

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Yep Mr B it was, its been sat in a bucket of thinners all night and when lifted out about an hour ago it seems to have clreared but I will leave it in over the weekend and let it clear everything.

18 Re: Rocker cam gap on 12th January 2018, 1:00 pm

Bandyleg

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@GTI-R US wrote:Dont use those torque settings unless you use new bolts or i guarantee that youll snap the bolts in head
Just tighten them by hand with 3/8 wrench until you feel they are tight and they will be fine

Thanks Bob

19 Re: Rocker cam gap on 12th January 2018, 1:08 pm

Mr B

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gtir technician
gtir technician
zap it with some brake or carb cleaner be sure .

20 Re: Rocker cam gap on 12th January 2018, 2:09 pm

Bandyleg

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I will do thanks Smile

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