924Board.org

Moparboy72 · Joined: 29 Jul 2014 Posts: 43 Location: Naperville, IL

I could have sworn there was a link on here in the recent past to a Swedish/Scandinavian site selling solid lifters which fit the 924/931. I have searched a number of times but can not seem to find the link.

Let me know if you can help of if you have a set for sale.

Thanks!

MikeJinCO · Posted: Mon Aug 24, 2020 11:45 am Post subject:

I think that was Gegge, hidden in a rebuild threat a while back. RD Valve Spring in CA makes both 38 and 38.5 buckets, I'm under the impression that ours are 38.5, could be wrong. I called about valve shims and then asked about the buckets and he didn't have any 38.5's in stock. They make the Lindsey Racing high performance valve springs for the 944 line.
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Mike
Poco a Poco, #033 '78 Vintage racer, SCCA Dp-81
'77 924
cricketdesigns.com

MikeJinCO · Posted: Mon Aug 24, 2020 12:21 pm Post subject:

Catcam in Netherlands, Piper camshaft and Newman Cams in UK can make them also. I just bought a Catcam cam, price was good, delivery was about 4 weeks. l
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Mike
Poco a Poco, #033 '78 Vintage racer, SCCA Dp-81
'77 924
cricketdesigns.com

gegge · Joined: 27 Jul 2007 Posts: 1088 Location: Sweden

Dirty cheap USD10 a piece:

https://www.acm.se/en/product/valve-tappet-38-5-mm-porsche

Sten Parner retired and sold his company to ACM. These are the exact same as IDEOLA sold a couple years ago.
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

Cédric · Joined: 27 Aug 2004 Posts: 2073 Location: Sweden

Fasteddie313 · Joined: 29 Sep 2013 Posts: 2129 Location: MI

Whats the point of these lifters exactly unless you are trying to build a high rpm engine exceeding the capabilities of the rods even?

They are already solid lifters, and the grub screws are pretty darn convenient..
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80 Turbo - Slightly Modified

Cédric · Joined: 27 Aug 2004 Posts: 2073 Location: Sweden

Well, except for high revving the spm ones at ACM is about a 1/10 of the price of a new stock lifter

but sure the adjusting screw is nice but heavy
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1980 924 Turbo

Moparboy72 · Joined: 29 Jul 2014 Posts: 43 Location: Naperville, IL

Thank you all for the responses. This is the exact link I was looking for.

gegge · Joined: 27 Jul 2007 Posts: 1088 Location: Sweden

Coco_Lev · Joined: 04 May 2020 Posts: 46 Location: France

Has anyone a feedback on the durability of these products?

From my datas, steel has a higher Young modulus than grey cast Iron that means a higher contact pressure. In renault engines there're several failures of this type, because of this kind of material replacement.

MikeJinCO · Posted: Sun Nov 01, 2020 12:12 am Post subject:

I have the Parner ones in my race car that I bought used from Britain Smith. He really pushed them hard and I haven't been very easy on them and they are doing well. My current camshaft was nitride hardened so probably harder than the buckets. Bucket lifters are very common these days on OHC motors and motorcycles. Ours are unusual due to the size, most of the available ones are smaller in the 26-36mm range. I'd tend to look for an oiling issue first. The surface stresses of the bucket to cam interface opens up the huge subject of zinc in the oil content.
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Mike
Poco a Poco, #033 '78 Vintage racer, SCCA Dp-81
'77 924
cricketdesigns.com

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11408 Location: PacNW

gegge · Joined: 27 Jul 2007 Posts: 1088 Location: Sweden

I have the solids in my DD without any issues. Thay are doing just fine with a 14mm lift race cam.
_________________
Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs