Vinman1 Posted January 10, 2022 Share Posted January 10, 2022 Hope everyone is good. Looking for a 4 into one exhaust system for a 1979 Seven with a cross flow engine. Caterham has the kit, however, the silencer is not available and they won't sell a partial kit. Figured I would look on this side of the pond before I ordered in pieces from them. Cheers, Vin Link to comment Share on other sites More sharing options...
fotsyr Posted January 13, 2022 Share Posted January 13, 2022 You have a PM Link to comment Share on other sites More sharing options...
IamScotticus Posted January 20, 2022 Share Posted January 20, 2022 (edited) I see Cat 160 mufflers on clearance at Catetham parts. I estimate the tube size to be very close to the 1.75 XFlow. I took a chance on one as I needed a side exhaust. I haven't received it yet. Edited January 22, 2022 by IamScotticus Link to comment Share on other sites More sharing options...
Vinman1 Posted January 21, 2022 Author Share Posted January 21, 2022 Iamscotticus, Thanks for the reply. Sorry for the delay, took the wife to Florida for her B'day. I will check part out and keep that in mind. Other option is to fab one, perfed pipe in a pipe, might be all I need... Cheers, Vin Link to comment Share on other sites More sharing options...
bball7754 Posted January 22, 2022 Share Posted January 22, 2022 You might want to try Redline Components in the UK. Believe your best bet is a phone call. Steve Link to comment Share on other sites More sharing options...
Vinman1 Posted January 22, 2022 Author Share Posted January 22, 2022 Steve, Working with another member on the exhaust. Will try Redline by phone in the future. Have emailed several times and no response. Cheers, Vin Link to comment Share on other sites More sharing options...
IamScotticus Posted January 22, 2022 Share Posted January 22, 2022 I am also wanting a 4>1 but for std 1.75" as I don't plan on increasing capacity. Ill increase compression b4 I do that. I think the Cat kits are 2"? I have a 2" muffler (no,I don't want to sell it, yet). If my 160 can works out I might. I could get a 4>1 2" kit but I thinks the tune would be all off for 1600. Good for 1700-2000cc. Tell me if Im wrong. 4>1 looks cooler coming out the side, LOL Ground clearing is always an issue and 2" cans are bigger. Link to comment Share on other sites More sharing options...
Vinman1 Posted January 23, 2022 Author Share Posted January 23, 2022 IamScotticus, The cat kit is for a 1600 cross flow per there description. I will check to make sure no issues. Also waiting on pics of one a member has for sale. Need exhaust to run in engine on test stand, however, hold up now is finding forged 10 or 10.5:1 pistons. Best wishes on your project Vin Link to comment Share on other sites More sharing options...
7Westfield Posted January 24, 2022 Share Posted January 24, 2022 I'm assuming you're rebuilding an "uprated" engine--711M block, but if it happens to be an old "cortina" block, I have a set of Hepolite 10.5 compression .040 over pistons that need a new home Charlie Link to comment Share on other sites More sharing options...
Vinman1 Posted January 24, 2022 Author Share Posted January 24, 2022 Charlie, It is a 711M block. I have a set of Ford NOS .030 cast pistons that came in the boxes of parts with the car. Have a Scat forged crank and Kent performance cam kit. Thinking forged pistons and rods make sense, upgraded valves, and a set of roller rockers. Trying to determine how far to go with the engine for road and occasional track use. Vin Link to comment Share on other sites More sharing options...
IamScotticus Posted January 25, 2022 Share Posted January 25, 2022 15 minutes ago, Vinman1 said: Charlie, It is a 711M block. I have a set of Ford NOS .030 cast pistons that came in the boxes of parts with the car. Have a Scat forged crank and Kent performance cam kit. Thinking forged pistons and rods make sense, upgraded valves, and a set of roller rockers. Trying to determine how far to go with the engine for road and occasional track use. Vin Vin, Thats a really nice package there! What can is that? I would love to 234 my 1600 but I would need deeper cut pistons. One thing I would ask is, are hardened valve seats necessary? If I were doing this job, I would not do valve seats and use a lead substitute instead. Have heard seats falling out. Is this something you are considering? Link to comment Share on other sites More sharing options...
bball7754 Posted January 25, 2022 Share Posted January 25, 2022 Vin - when I had my Crossflow rebuilt by Curtis Farley (now retired), he recommended that I replace my stock crank with a SCAT crank used in FF engines. I did, and have more peace of mind around 7k. I already had the 244 cam and a head with port work and larger valves. Added forged pistons and the crank. It’s been great, and still strong. Steve Link to comment Share on other sites More sharing options...
Vinman1 Posted January 25, 2022 Author Share Posted January 25, 2022 Steve, The mechanic I bought the engine from gave me a great article from back in the day on how to build an FF engine and have been following that, which sounds like what you have. As stated, I have the forged SCAT crank and cam kit. Trying to decide on pistons. What is the compression ratio of the forged pistons in yours? I can only find 11.9 or 12:1, and am thinking that may be an issue? Thanks for all the inputs. Vin Link to comment Share on other sites More sharing options...
bball7754 Posted January 25, 2022 Share Posted January 25, 2022 Vin - Sorry, I didn’t do a very good job reading your post, and missed that you already have the SCAT crank. I also have roller rockers. The C/R is 9.91, but the only info Curtis gave me is that he got the pistons from Burtons in the UK. Don’t have any specifics. I would think that around 12 would be way too much for pump gas. I think the Crossflow in my Mallock is 12.5, and I use 110 race gas with it. Where are you on the Cape? My aunt had a house in Chatham where I spent several summers. Steve Link to comment Share on other sites More sharing options...
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