Engine and Transmission Tech
tips, technology, tools and techniques related to vehicle driveline components
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
John said the conical springs i have aren’t stock and I’m assuming they may need to be changed with the diff valves??
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
Which springs did Jon use with his valves?
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
We originally wanted Z28 springs which are good replacement for stock. Previous owner had heads cut for larger diameter beehive springs so the machine shop went with 70 Camaro LT1 springs and Comp Cams 11 degree retainers with stock Buick/Rover keepers .I'll send you links. Probably your best bet.
Edited 1 time(s). Last edit at 06/26/2025 06:20PM by mgb260. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
Z28 valve springs:
[www.ebay.com] 11 Degree retainers: [www.summitracing.com] Edited 3 time(s). Last edit at 06/26/2025 06:17PM by mgb260. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
All should work fine with the larger Rover valves. I added the link for the retainers above. Laptop battery died.
Edited 1 time(s). Last edit at 06/26/2025 05:14PM by mgb260. |
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MGBV8 Carl Floyd Kingsport, TN (4621 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
"John said the conical springs i have aren’t stock and I’m assuming they may need to be changed with the diff valves?"
Does he know this for sure or is he thinking they did not have them back then? The Olds 215 had conical or beehive springs as OEM. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
True, Stock ones are pretty weak though, Most likely Comp Cams Beehives for SBC. If you zoom in on this pic, they look like the larger diameter one's like Jon had on his.
Stock beehives: Edited 3 time(s). Last edit at 06/26/2025 06:52PM by mgb260. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
Scott, Call TA and Egge on the Buick 11/32" 11 degree Keepers/Locks, British call them Collets. TWS has the Rover one's at $5 something a half and you need 32 pieces. Rimmer was $6 something!
Edited 1 time(s). Last edit at 06/27/2025 10:41AM by mgb260. |
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
OK, I ordered the larger valves from Rimmer and the 11 degree retainers from Summit. Thanks!!
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
TA doesn't show 11 degree 11/32” keepers. They have them for 3/8” application. They have 10 degree for the 11/32’. Calling Egge now.
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
If Egge doesn't have them TWS has the best outrageous price. American parts are around 4 times cheaper usually. Did you order the Z28 springs too, the retainers won't fit the beehives.
Edited 1 time(s). Last edit at 06/27/2025 12:30PM by mgb260. |
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6579 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
Usually best to call TA about parts they do not list. Often they either do have them or can get them.
Jim |
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
I ordered the Z28 springs; John doesn’t think the head was machined for larger springs.
I called TA on the Keepers and he said they were hard to come by. He said he had a set but they weren’t for sale. He said it might be easier to find them on a junk Rover motor. Rimmer was double the price of Egge and they were a back order item. Egge said they could get them but wanted to confirm the estimated delivery time before taking the order. Edited 1 time(s). Last edit at 06/27/2025 01:10PM by Gswest236. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
Maybe they are the stock beehive springs and your pic's perspective made them look bigger. Z28 springs work great. That is a typo saying 118lbs closed. Really 110 @ 1.70 installed. Use 1.72 for 95lbs.
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
The Egge Machine rep was going to call me with a ETA estimate on the keepers before taking my order. He didn't call back. I’m wondering if the TA guy is right and these particular keepers are very scarce over here. Rimmer Bros might be the only source, other than a salvage yard with a wrecked Rover.
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Moderator Curtis Jacobson Portland Oregon (4636 posts) Registered: 10/12/2007 02:16AM Main British Car: 71 MGBGT, Buick 215 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
“Wanted” ad in our classified section?
Or maybe call D&D Fabrications? (I think they used to have used parts too.) Edited 1 time(s). Last edit at 06/27/2025 10:08PM by Moderator. |
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mgb260 Jim Nichols Sequim,WA (2632 posts) Registered: 02/29/2008 08:29PM Main British Car: 1973 MGB roadster 260 Ford V8 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
I'd call Egge Monday, The Wedge shop was a little cheaper than Rimmers. Curtis's idea may be the best deal.
[thewedgeshopstore.com] Edited 1 time(s). Last edit at 06/28/2025 12:24AM by mgb260. |
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Gswest236 Scott West Seabeck, Washington (174 posts) Registered: 07/14/2021 09:13PM Main British Car: 1974.5 MGBGT V8 Olds 215 Stroked to 266 |
Re: Did a compression test on my stroked Olds 215, not good. #4 cylinder at 50 lbs.
If TWS has them, thats less than Rimmer when shipping is figured in and euro exchange rate and all that (and they dont have 32, they have 8 or 9 and the rest are back order). Once I confirm Egge cant get them at $1 a piece, we’ll call TWS.
Thanks guys! |
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