[Gmecm] FW: Centerbolt TPI baseplate on old heads

[Eck, Joel]

Got this offline - looks like this place has them for $7.95. they used the same description on both the straight and angled bushings, though, so again, contact the mfr. to confirm which are the right ones for your application.


-----Original Message-----
From: JD [mailto:jdeeze at mhtc.net] 
Sent: Monday, November 01, 2010 10:41 AM
To: Eck, Joel
Subject: Re: [Gmecm] Centerbolt TPI baseplate on old heads

This page on their website has a clearer picture and price.
http://performanceparts.com/part.php?partID=93192
You will actually be installing the shims180 degrees from what is shown in 
the picture.
With the bigger side toward the outside.
They are showing an early style manifold on 72 degree heads (87-95 cast 
iron).
I usually start the bolt, then hold up the washer and shoot some RVT into 
the gap in the
manifold to prevent any vacuum leak. Which would cause problems with your 
PCV.


----- Original Message ----- 
From: "Eck, Joel" <Joel.Eck at hp.com>
To: "Jay Vessels" <jay at vessels-clan.com>; <gmecm at diy-efi.org>
Sent: Monday, November 01, 2010 9:29 AM
Subject: Re: [Gmecm] Centerbolt TPI baseplate on old heads


> http://www.professional-products.com/ManifoldAcc.php - "Intake manifold 
> bushings"
>
> I assume you'd want the angled bushing, p/n 52110, but you might be 
> looking for the straight bushing, p/n 52112. Depends on how they define 
> angled vs. straight. Probably best to call them to ask which are right for 
> pre-'87 heads.
>
> -----Original Message-----
> From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On 
> Behalf Of Jay Vessels
> Sent: Sunday, October 31, 2010 8:40 PM
> To: gmecm at diy-efi.org
> Subject: [Gmecm] Centerbolt TPI baseplate on old heads
>
> Hi there!
>
> Changed the subject line to reflect reality.
>
> I'm no fan of slotting those holes.  I know of no commercial filler
> piece for this, so your best bet is to make them yourself or have them
> made at a machine shop.  If memory serves the angle is 18 degrees but
> hopefully someone will chime in to verify or correct me.
>
> On a TPI baseplate it's not terrible, but a TBI intake -- well, next
> time I'll just buy the right intake.
>
> Jay Vessels
> 1982 Chevrolet S-10 Sport, 2.8V6 TBI
> 2006 Pontiac Solstice
>
>
> On 10/31/2010 06:33 PM, BNRVL at aol.com wrote:
>> Hello Scott , I need the 4- metal angle pieces for the 4 holes in the
>> center of my 1990 lower TPI intake manifold . I am converting a 1969 350
>> small block to TPI , and had to drill the holes as for the different
>> angle of the threads in the old cast iron heads .
>> Can you help or know where these pieces can be found ....??
>> Thanks
>> Bob
>
> _______________________________________________
> Gmecm mailing list
> Gmecm at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/gmecm
> _______________________________________________
> Gmecm mailing list
> Gmecm at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/gmecm